a) The test statistic is: t = -1.11.
b) The p-value is: 0.1342.
c) The conclusion is that the null hypothesis is not rejected.
d) The final conclusion is that there is not sufficient evidence to conclude that the population mean is of 6.
What is the test statistic?The standard deviation for the population is unknown, only the sample standard deviation is known, hence the t-distribution is obtain the test statistic.
The test statistic is given by the equation presented as follows:
[tex]t = \frac{\overline{x} - \mu}{\frac{s}{\sqrt{n}}}[/tex]
In which the variables of the equation are given as follows:
[tex]\overline{x}[/tex] is the sample mean.[tex]\mu[/tex] is the value tested at the null hypothesis.s is the standard deviation of the sample.n is the sample size.For this problem, the values of these parameters are as follows:
[tex]\overline{x} = 5.83, \mu = 6, s = 2.11, n = 189[/tex]
Hence the test statistic is:
[tex]t = \frac{\overline{x} - \mu}{\frac{s}{\sqrt{n}}}[/tex]
[tex]t = \frac{5.83 - 6}{\frac{2.11}{\sqrt{189}}}[/tex]
t = -1.11.
P-value and conclusionThe p-value is obtained using a t-distribution calculator, with a left-tailed test, as we are testing if the mean is less a value, with 189 - 1 = 188 df and t = -1.11, hence it is of 0.1342.
Since the p-value is greater than the significance level of 0.10, it is found that:
The null hypothesis is not rejected.There is not sufficient evidence to conclude that the population mean rating is less than 6.More can be learned about the test of an hypothesis at https://brainly.com/question/13873630
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ALGEBRA 1 HW!! PLEASE HELP I WILL GIVE BRAINLYEST
The value of constant C is 50.
Explain linear equation.Equations with a maximum degree of one are referred to as linear equations. According to this rule, a variable in a linear equation cannot have an exponent greater than 1.
A linear equation's graph is always depicted as a straight line. There are linear equations for one variable and two variables, respectively.
Given, the linear equation is 12.5x+5y = C
Here, constant C.
Consider one points from given table x = -2 and y = 15,
Putting the value of x and y,
C = 12.5×(-2) + 5×15
= -25 + 75
= 50
For point, x = 0 and y = 10,
Putting the value of x and y,
C = 12.5×0 + 5×10
= 50
For point, x = 2 and y = 5,
Putting the value of x and y,
C = 12.5×2 + 5×5
= 25 + 25
= 50
Given, x = 4 and y = 0,
Putting the value of x and y,
C = 12.5×4 + 5×0
= 50
Therefore, the value of constant C was found to be 50.
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Judy mom prepared 30 sandwiches for her friends. Her mom added chicken breast to 2/5 of the buns. How many chicken sandwiches did her mom make.
What is the geometric mean of 5 and 11? *
If you draw two cards from a standard deck of 52 cards without replacement, find
P (Queen ⋂ Queen).
The probability of drawing two queens without replacement from ths standard deck is 1/221.
What is probability?Probability is the likelihood that an event will occur.
In a standard deck of cards, the total number of cards is 52.
There are 4 queens, the probability of drawing the first queen is 4/52.
After the first draw, there'll be 3 queens left and 52 cards. Therefore, the probability will be:
= 4/52 × 3/51
= 1/13 × 1/17
= 1/221
The probability is 1/221.
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(2/7 , −3) ; r = 6 standard form of circle
Eva says you can use the conversion for 60 km into
miles to convert 600 km into miles. Use Eva's
method to convert 600 km into miles.
300
miles
After using conversion of measurements , the answer is
60 km = 37.28 miles and 600km = 372.83 miles.
What is conversion of measurements?
By multiplying or dividing a number, a conversion factor can be used to change one set of units to another. If a conversion is required, it must be done using the correct conversion factor to get an identical value. The correct conversion factor, for instance, is 12 inches to 1 foot when converting between inches and feet. We must convert between different units in order to have accuracy and prevent measurement confusion.
Here the given we need to convert them km into miles.
To convert km to miles we need to divide the value by 1.609 .
=> 60 km
=> 60/1.609
=> 37.28 miles.
Now ,
=> 600 km
=> 600/1.609
=> 372.83 miles.
Therefore after conversion of measurement answer is
60 km = 37.28 miles and 600km = 372.83 miles.
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Use the Remainder Theorem to evaluate P(c).
P(x) = x4 + 7x³ – 6x – 11,
-
X
f(-1) =
[
C = -1
Answer:
[tex]-11[/tex]
Step-by-step explanation:
[tex]P(-1)[/tex] is the remainder when [tex]P(x)[/tex] is divided by [tex]x+1[/tex].
[tex]\frac{x^4 + 7x^3 - 6x-11}{x+1}=x^3 + 6x^2 - 6x-\frac{11}{x+1}[/tex].
The remainder is [tex]-11[/tex], so [tex]P(c)=-11[/tex].
A single ticket to the magic show costs ttt dollars, but there is a discount of 5\%5%5, percent per ticket if a group buys 101010 tickets.
The expression 10t-10\cdot 0.05t10t−10⋅0.05t10, t, minus, 10, dot, 0, point, 05, t describes the total cost of buying 101010 tickets for a group.
Match each amount in the situation with the expression that represents it.
Situation
Expression
(Kahn academy)
The total cost for the group of ten people after discount is 10 t - 0.5 t.
What is Algebra?A branch of mathematics known as algebra deals with symbols and the mathematical operations performed on them.
Variables are the name given to these symbols because they lack set values.
In order to determine the values, these symbols are also subjected to various addition, subtraction, multiplication, and division arithmetic operations.
Given:
Discount = 5%
Total tickets= 10
We have t represents the cost of one ticket.
So, For 10 person the cost of the ticket = 10t
Now, after discount the price of tickets
= 5% of 10t
= 0.5 t
Hence, the total cost for the group of ten people after discount is 10 t - 0.5 t.
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2. Clare was solving an equation, but when she checked her answer she saw her solution was incorrect. It
turns out Clare's work has three mistakes!
8(2 + 7x)
10+56x
10+56x
10
12
3
16
3x - (2+5x)
3x - 2 + 5х
8r-2
642-2
64x
The mistakes that Claire made in solving the equation are;
1) She did not use distribution property correctly in step 1 as 2(8) = 16 and not 10.
2) - (2+5x) should have been simplified to -2 - 5x and not -2 + 5x
3) 10 + 56x = 8x - 2 should have been 12 = -64x and not 12 = 64x
How to solve Linear Equations?
We want to solve the equation 8(2 + 7x) = 3x - (2 + 5x)
Step 1; Expand the bracket on the left hand side and right hand side to get; 16 + 56x = 3x - 2 - 5x
Step 2; Simplify the right hand side to get;
16 + 56x = -2x - 2
Step 3; Rearrange to get;
16 + 2 = -58x
Step 4; Add up the left hand side to get;
18 = -58x
Step 5; Divide both sides by -58 to get;
x = -9/29
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Complete question is;
Clare was solving an equation, but when she checked her answer she saw her solution was incorrect. It
turns out Clare's work has three mistakes!
find all three mistakes explain the below
8(2 + 7x) = 3x - (2+5x)
10 + 56x = 3x - 2 + 5х
10 + 56x = 8x - 2
10 = 64x - 2
12 = 64x
x = 3/16
Quincy has a jewelry business in which he designs and sells bracelets. His daily profit, Q(x), can be modeled by the function Q(x) = 8.25x − 24.75, where x is the number of bracelets he sells. What is the value of Q(3), and what is its interpretation?
Q(3) = 0; If Quincy sells 3 bracelets, he will earn $0.
Q(3) = 0; If Quincy sells 0 bracelets, he will earn $3.
Q(3) = 3.36; If Quincy sells 3 bracelets, he will earn $3.36.
Q(3) = 3.36; If Quincy sells 3.36 bracelets, he will earn $3.
The correct interpretation is Q(3) = 0; If Quincy sells 3 bracelets, he will earn $0.
What is Equation?Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.
It demonstrates the equality of the relationship between the expressions printed on the left and right sides. LHS = RHS is a common mathematical formula.
Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.
Given:
Q(x) = 8.25x − 24.75, where x is the number of bracelets he sells.
So, for x= 3 them Q(3)
Q(3)= 8.25 (3) - 24.75
Q(3) = 24.75 - 24.75
Q(3) = 0
Hence, Q(3) = 0; If Quincy sells 3 bracelets, he will earn $0.
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A manufacturer of fax machines find that the cost (in dollars) generated by manufacturing x
units per week is given by the function C(x) = 0.15x²-39x+4500. How many units should
be manufactured to minimize the cost?
130 units should be manufactured to minimize the cost.
How to solve a quadratic equation using quadratic formula?Only a factorable quadratic expression can be solved using the factoring approach, and a quadratic equation with real roots can be solved using the graphing method, etc. However, the quadratic formula can be used to solve any kind of quadratic problem and gets over all these restrictions. step 1: Get into the standard form as the first step.step 2: Determine the values of a, b, and c by comparing the equation to [tex]ax^{2} +bx+c=0[/tex]Step 3: Replace the numbers in the quadratic equation, which is written as[tex]x = \frac{-b\sqrt{b^{2}-4ac} }{2a}[/tex] step 4: simplifyCalculation
by using the quadratic formula
[tex]x = \frac{-b\sqrt{b^{2}-4ac} }{2a}[/tex]
where, a = 0.15, b = -39 and c = 4500
x= [tex]\frac{-b}{2a} = \frac{39}{0.3} =130[/tex]
Hence, 130 units should be manufactured to minimize the cost of fax machines
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130 units should be manufactured to minimize the cost.
How to solve a quadratic equation using quadratic formula?Only a factorable quadratic expression can be solved using the factoring approach, and a quadratic equation with real roots can be solved using the graphing method, etc. However, the quadratic formula can be used to solve any kind of quadratic problem and gets over all these restrictions. step 1: Get into the standard form as the first step.step 2: Determine the values of a, b, and c by comparing the equation to [tex]ax^{2} +bx+c=0[/tex]Step 3: Replace the numbers in the quadratic equation, which is written as[tex]x = \frac{-b\sqrt{b^{2}-4ac} }{2a}[/tex] step 4: simplifyCalculation
by using the quadratic formula
[tex]x = \frac{-b\sqrt{b^{2}-4ac} }{2a}[/tex]
where, a = 0.15, b = -39 and c = 4500
x= [tex]\frac{-b}{2a} = \frac{39}{0.3} =130[/tex]
Hence, 130 units should be manufactured to minimize the cost of fax machines
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Find the coordinate of the midpoint of the segment with the given endpoints.
- 5 and 4
The midpoint of the segment with the given endpoints.-5 and 4 is -0.5.
What are coordinates?
A pair of numbers is used to express a point's position on a coordinate plane using the horizontal and vertical distinctions from the two reference axes.
What is a midpoint?
A midpoint is a point that lies on a line connecting two other locations and is in the middle of the line.
Here,
A midpoint can also be written as an average or mean of two points.
Mean of -5 and 4 = (- 5 + 4)/2 = -0.5
Hence "The midpoint of the segment with the given endpoints.-5 and 4 is -0.5".
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Which expression uses the commutative property of addition and the associative property of
multiplication to rewrite the expression 3 (28) +7?
O 7+(3-2).8
O 3 (8-2)+7
O 7+3 (16)
O (3-2) 8+7
The expression that uses the commutative property of addition and the associative property of multiplication to rewrite the expression 3 (28) +7 is 7+(3-2).8
The commutative property of addition states that a change in the order of the numbers being added does not affect the sum. We can define commutative property of addition as adding the numbers in any order will give the same answer.
a + b = b + a
3(2x8) + 7 = 7 + 3(2x8)
The associative property of multiplication says that while multiplying three numbers, regardless of the way the numbers are grouped, the end result will always be the same.
a(b x c) = (a x b) c
7 + 3(2x8) = 7 + (3.2)8
Therefore, the expression that uses the commutative property of addition and the associative property of multiplication to rewrite the expression 3 (28) +7 is 7+(3-2).8
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Choose which property of equality is demonstrated.
a. AB = AB
A company gives yearly raises to their employees. The salaries at the company are based on the equation below, where S is the salary before taxes and t is the time since the date of hire in years.
S = $33,113 + $600t
What is the minimum number of years an employee would have to stay to make a salary of over $40,000 per year?
A. 13 years
B. 12 years
C. 11 years
D. 1 year
Based on the equation, the minimum number of years an employee would have to stay to make a salary of over $40,000 per year is B. 12 years.
What is an equation?An equation is a mathematical statement that defines that two or more mathematical expressions are equal or equivalent.
Equations show equality using the equation symbol (=).
When one expression is more or less than, or not equal to another expression, it is an inequality.
If S = $33,113 + $600t
Where S = the salary before taxes
t = the time since the date of hire in years.
For S ≥ $40,000:
$33,113 + $600t ≥ $40,000
$600t ≥ $40,000 - $33,113
$600t ≥ $6,887
t ≥ 11.48
t = 12 years
Thus, using the given equation, an employee needs to stay at the work for 12 years to earn more than $40,000 a year.
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Only 9 people can be in a roller coaster cart. How many people can fit in nine train carts
Answer:
81 people
MARK AS BRAINLIEST
Drag and drop each item into the appropriate space.
Given: WXYZ is a parallelogram; overline WY is a transversal
Prove: triangle WXY cong triangle YZW X
Statement Reason
1. WXYZ is a parallelogram overline WY is a transversal
2 overline XY cong overline WZ :; overline XW cong overline YZ
3 . angle WYX cong angle YWZ 4 overline WY cong overline WY
5. triangle WXY cong triangle YZW
Reflexive Property
Definition of a parallelogram
ASA
Alternate interior angles are
Given
6. Solve the following equation: 28 ÷ 7 + 2 × 3 = ?
O A. 12
OB. 10
OC. 24
O D. 18
Answer:
B. 10
Step-by-step explanation:
According to BODMAS rule, the brackets have to be solved first followed by powers or roots, then Division, Multiplication, Addition, and at the end Subtraction.[tex]\rm \implies 28 \div 7 + 2 \times 3 \\ \\ \rm \implies 4 + 2 \times 3 \\ \\ \rm \implies 4 + 6 \\ \\ \rm \implies 10[/tex]
What is the range of the given function?
{(-2, 0), (-4, -3), (2, −9), (0, 5), (−5, 7)}
O {x|x = -5, -4, -2, 0, 2)
Oyly = -9, -3, 0, 5, 7)
{x|x = -9, -5, -4, -3, -2, 0, 2, 5, 7}
Oyly = -9, -5, -4, -3, -2, 0, 2, 5, 7}
The range of the given function is:
Range: {-9,-3,0,5,7}
We are given ordered pair of set (x,y)
where, first value of ordered pair shows domain of function and second value of ordered pair shows range.
Range: It is output value of function.
Ordered pair: {(–2, 0), (–4, –3), (2, –9), (0, 5), (–5, 7)}
We can write as:
f(-2)=0, f(-4)=-3, f(2)=-9, f(0)=5, f(-5)=7
The values of f(x) are the range of function.
We will make a set of second value of all ordered pair of given set.
Range: {-9,-3,0,5,7}
Hence we get the required range of the function.
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HELP WILL GIVE BRAINLYEST!!!!!!! 30 POONTS Which of the following is the fourth vertex needed to create a rectangle with vertices located at (−4, −25), (−4, −12), and (−7, −12)?
(−12, 7)
(−7, −25)
(−7, 12)
(−25, 7)
Answer: I believe the answer is (-7, 12)
Step-by-step explanation:
Answer:
-7,12
Step-by-step explanation:
Quinn is baking sweet potato pies. The table shows the ratio of cups of sugar to number of pies.
Number of Pies 3 5 9
Cups of Sugar 1 and one half 2 and one half 4 and one half
How many cups of sugar will Quinn need to make 12 pies?
5 and one half cups
6 cups
6 and one half cups
8 cups
The ratio of 6 cups of sugar to pie that Quinn needs to make 12 potato pies will be 6 cups.
What is ratio?Ratio basically compares quantities, that shows value of one quantity with respect to other quantity.
If a and b are two values, there ratio will be a:b.
Given that,
For 3 potato pies required sugar is 3/2,
For 5 potato pies required sugar is 5/2,
for 9 potato pies required sugar is 9/2,
From the given information,
For 1 potato pies required sugar is 1/2
⇒For 12 potato pies required sugar=12×1/2=6
To make 12 potato pies, required sugar will be 6.
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A rectangular ground is 121/4m long and 41/2 m broad. Find the perimeter and area of the ground.
Answer:
Thank you,Hope you like it and it will help you
Khalil filled an ablum with 104 postcards. If there are 4 postcards on each page, how many pages are in the ablum?
Step-by-step explanation:
so there sre 104 postcards .so what we do is 104 ÷ 4 post cards on each page , it will then = to 26 pages
what is the distance between 2 + x and 2?
Answer:
The difference is the what the sum of 2+x is
Step-by-step explanation:
suppose x=3 2+3 = 5
the difference between 5 and 2 is 3
if after 40 month amount of 2375 is received by 15/2% interest rate, how much is principal ?
The principal is 1900
From the question, we have
after 40 month amount of 2375 is received by 15/2% interest rate
T = 40/12 = 10/3
amount = 2375 = P+I
R = 15/2%
amount = P+I
2375 = P+(PRT)/100
2375 = P(1+(RT)/100)
substituting the value we get
2375 = P(1+(25)/100)
2375 = P*125/100
P = 2375*100/125
P = 1900
Multiplication:
Finding the product of two or more numbers in mathematics is done by multiplying the numbers. It is one of the fundamental operations in mathematics that we perform on a daily basis. Multiplication tables are the main use that is obvious. In mathematics, the repeated addition of one number in relation to another is represented by the multiplication of two numbers. These figures can be fractions, integers, whole numbers, natural numbers, etc. When m is multiplied by n, either m is added to itself 'n' times or the other way around.
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41 is 10 1/4% of what number
By the concept of percentage, 41 is [tex]10\frac{1}{4}[/tex] % of the number 400.
What is meant by percentage?The percentage is a comparative figure denoting one-hundredth of any quantity. One percent (symbolized as 1%), being the hundredth component, is represented as 100 percent, while 200 percent signifies twice the amount specified. Percent is derived from the Latin word per centum, which means "by the hundred." In the 16th century, the Latin expression was adopted by English. Later, it was shortened to % with a period in the end. The present one-word form % was created after the period was eliminated and the two elements were combined. In essence, percentages are fractions with a denominator of 100. The percent symbol (%) is placed next to a number to indicate that it is a percentage.
Let the number be x.
Then, according to the question
[tex]10\frac{1}{4}[/tex] can be written as 41/4
So,
41/400 × x = 41
41 x = 41 ×100
x =400
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what is the inequality of the length of a rectangle is 1 unit more than its width.the width of the rectangle is 2 units and the length of the wire that is used to make this rectangle is a maximum of 57 units. what represent this situation using an inequality
Representing length and width relationship of a rectangle, and the perimeter given by length of wire using inequality gives
Perimeter = 2(L + W) ≤ 57 units How to determine the inequality that shows the length and width of a rectangleThe perimeter of a rectangle, P is given by the formula
P = 2(L + W) ≤ 57 units of wire
width, W = 2 units
length, L = 1 + W
= 1 + 2
= 3
The perimeter of the rectangle is given by
P = 2(L + W)
plugging the values of L and W
P = 2 (3 + 1)
P = 2 (4 )
P = 8 units
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Construct a rational function that has a vertical asymptote at x = 3 and a removable discontinuity at x = -2. Explain how you determined your answer.
WILL GIVE BRAINLYIST
The rational function is (x + 2)/(x - 3)(x + 2) which has a vertical asymptote at X = 3, and a removable discontinuity at x = -2.
Function
The function is referred as a mathematical expression that defines a relationship between one variable and another variable.
Given,
Here we need to construct a rational function that has a vertical asymptote at x = 3 and a removable discontinuity at x = -2.
Through the given question, we have been given that the rational function that has a vertical asymptote at x = 3, and a removable discontinuity at x = -2.
Here the x = 3 is a vertical asymptote.
So the one factor in the denominator is (x - 3),
And the discontinuity at x = - 2 can be removed, so the another common factor in the numerator and denominator is x+2.
Therefore, the rational function would be :
f(x) = (x + 2)/(x - 3)(x + 2)
So, the rational function would be (x + 2)/(x - 3)(x + 2).
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Five thousand dollars is deposited into an ordinary annuity after each quarter for 3 years. The account pays 6
percent interest compounded quarterly. What is the future value of the account in 3 years?
The future value of the account in 3 years is $15,918.
What is a future value?
The worth of a current asset at some point in the future based on an estimated rate of growth is known as future value (FV). For investors and financial planners, the future value is crucial because they use it to predict how much an investment made now will be worth in the future.
Here, we have
FV =C×[ ((1+i)ⁿ −1)/i]
where:
C = cash flow per period
i = interest rate
n = number of payments
By applying the future value formula, we get
= $5,000×[ ((1+0.06)³ −1)/0.06 ]
= $5,000×3.1836
= $15,918
Hence, the future value of the account in 3 years is $15,918.
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Consider the equation and the following ordered pairs: (6,y) and (x,1).
y=−2x+5
The values of the variables x and y are 2 and -7.
We are given an equation. The equation is linear in nature. The equation represents a straight line. The equation is y = -2x + 5. We are given two sets of ordered pairs. The ordered pairs are (6, y) and (x, 1). These points satisfy the given equation. We need to find the values of the variables x and y. We will substitute the coordinates into the equation.
y = -2x + 5
First, we will put (6, y).
y = -2(6) + 5 = -12 + 5 = -7
Now, we will put (x, 1).
1 = -2x + 5
2x = 4
x = 2
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