Answer:
B. Larger sample size and lower confidence level
Step-by-step explanation:
The margin of error of a confidence interval is given by the following formula:
In which is the standard deviation of the population and n is the size of the sample.
z is related to the confidence level. The higher the confidence level, the higher the value of Z.
So, the margin of error is direct proportion to the confidence level and inverse proportional to the sample size.
We want to decrease the margin of error.
So the correct answer is:
B. Larger sample size and lower confidence level
Answer:
(E) A lower confidence level was used.
Step-by-step explanation:
The correct answer is (E). With the sample proportion remaining the same, a lower confidence level results in a lower margin of error and a narrower interval.
Students were asked how many pairs of shoes they owned. Their responses were 8, 2, 1, 5, 7, 6, 2, 2, 8, and 3.
The mean of the data is?
4.4
The median of the data is?
4
The mode of the data is?
2
The range of the data is?
Answer:
mean is 4.4
median is 4
mode is 2
range is 7
Step-by-step explanation:
Which expression re presents the volume of a cube whose edge length is 60 units
Answer:
60^3, so choice A
Step-by-step explanation:
The right answer of question no 20 is (60)^3.
well,I have given the answer of next one question also.
Look at the attached picture
Hope it will help you
Good luck on your assignment
The quadrilateral ABCD is a rhombus with diagonals AC = 12 ft and BD = 4 ft. The points M and N divide diagonal AC on three equal parts. Prove that BMDN is a square and find its area.
Answer:
area of BMDN 8 ft²
Step-by-step explanation:
In BMDN the diagonals are BD and MN.
MN is 12/3 = 4 ft long, and BD = 4 ft.
A rhombus with equal diagonals is a square, so BMDN is a square.
In the right triangle BDN, the diagonal BD is the hypotenuse, then:
DN² + NB² = BD²
but DN = NB, then:
2*DN² = 16 ft²
DN² = 8 ft²
The area of BMDN is computed as one of its sides squared. Then, DN² is its area
Find the volume of the following cone. Use 3.14 for π.
Question 2 options:
9847.04 cubic meters
39388.16 cubic meters
10257.33 cubic meters
41029.33 cubic meters
Answer:
A. 9847.04 cubic meters
Step-by-step explanation:
Answer:
B; 39388.16 cubic meters
Step-by-step explanation:
I think the following information will make things clearer:
The formula for finding the volume of a cone is V = πr²h/3:
We can substitute our lengths to find out the volume.
[tex]28^{2} = 784\\48 \: \div \: 3 = 16\\16\: \cdot \: 784 \: \cdot \: 3.14\\= 39,388.16[/tex]
Thusly, the volume of the cone is [tex]\boxed{39,388.16}[/tex].
Hope this helps!! ((:
Subtract
(3x² + 7) – (3x - 2)
Answer:
3x^2 - 3x + 9
Step-by-step explanation:
you combine like terms. so the only things you can subtract is 7 - -2 which is actually 7 + 2. hope this helped
Answer:
(3x² + 7) – (3x - 2)= 3(x²-x+3)
Step-by-step explanation:
3x² + 7- 3x - 2 -add 7 and 2 to get 9
3x²- 3x+9 -factor the common term which is 3
3(x²-x+3) -then here's you answer
As the speed of a ship increases, the time remaining in the journey decreases. This is an example of what type of correlation?)
a)Can't be determined
b) No correlation
C)
Negative correlation
D)
Positive correlation
Answer:
I think negative correlation
Step-by-step explanation:
Answer:
negative correlation is the answer
Step-by-step explanation:
Chad's bedroom floor is 19 feet long and 19 feet wide. He has an area rug on his floor that is 5 feet long and 8 feet wide.
Which statement tells how to find the amount of the floor that is not covered by the rug? Select all that apply.
A Add 19 + 19 + 5 + 8.
B Subtract 40 from 19 × 19.
C Subtract 19 × 8 from 19 × 5.
D Add 19 × 19 and 5 × 8.
E Subtract 5 × 8 from 19 × 19.
F Subtract 19 × 19 from 5 × 8.
Answer:
B and E
Step-by-step explanation:
Subtract the area of the rug from the bedroom floor.
Answer:
E
Step-by-step explanation:
Area of the floor that is not covered = Area of floor - area of rug
= 19 *19 - 5*8
= 361 - 40
= 321 Sq.ft
Help please! Check picture!!
Answer:
5
Step-by-step explanation:
They are different by 5 percantages
Seventh grade > DD.7 Compound events: find the number of outcomes HZR
You roll a die and pick a marble. How many outcomes are possible?
Submit
What is the net change in the temperature relative to when lko woke up
Complete question:
Between the time iko woke up and lunchtime, the temperature rose by 11°. Then by the time he went to bed, the temperature dropped by 14°.
What is the net change in the temperature relative to when lko woke up?
Answer:
The net change in the temperature relative to when lko woke up =
[tex]\bold{-3}[/tex] °
Step-by-step explanation:
Given that between his wake up time and lunch time, temperature rose by 11°. Let the new temperature be [tex] \bold{T1} [/tex] and let the initial temperature(temperature before wakeup time) be [tex] \bold{T} [/tex]
Since the temperature rose by 11°, the new temperature after Iko woke up, T1, would be derived by adding 11° to the initial temperature.
i.e, T1 = T + 11......................(1)
At bed time the temperature dropped by 14°. Therefore, the temperature would now be 14 less than the new temperature T1. It is expressed as:
T1 + (-14).......................... (2)
Let's substitute T + 11 for T1 in equation 2, we have:
T + 11 + (-14)
To find the expression for the net change in temperature, let's subtract the initial temperature T, from (T+11 -14) i.e,
ΔT = (T + 11 - 14) - T
Solving further, we have:
ΔT = T - T + 11 - 14
ΔT = 11 - 14
ΔT = -3°
Therefore, the net change in the temperature relative to when lko woke up is = -3°
When there is no outlier is thebetter measure of center for a set of data
Median
Mode
Range
None of the above
Answer:
Median
Explanation:
The median is the middle number. This answer fits best with the question asked.
The mode is the number that occurs the most. This number doesn't really have a correlation to the middle of this data.
The range is just how many numbers the data spans across. It has no relation to the middle of the data.
Please help! Its geometry
Answer:
48 cm^2
Step-by-step explanation:
The lateral surface are is the sides
We have 4 triangles that are identical
Find the area of one of the triangles and multiply by 4
A = 1/2 bh
A= 1/2 (6) *4
A = 12 cm^2
Multiply this by 4 for the 4 sides
LSA = 4*12 = 48 cm^2
Answer:
48 cm^2
Step-by-step explanation:
The lateral surface are is the sides
We have 4 triangles that are identical
Find the area of one of the triangles and multiply by 4
A = 1/2 bh
A= 1/2 (6) *4
A = 12 cm^2
Multiply this by 4 for the 4 sides
LSA = 4*12 = 48 cm^2
Read more on Brainly.com - https://brainly.com/question/16473299#readmore
Step-by-step explanation:
what is the length of CD
Answer:
20 yds.
Step-by-step explanation:
From C to E 10 yds. so if you double that you get 20 yds.
Brainliest plz
Given f(x)=x^2 and g(x)=5x find f(g(-2))
Answer:
100
Step-by-step explanation:
Answer: 100
Step-by-step explanation:
Which binomial is a factor of the quadratic trinomial x2 − 7x + 12? A. (x + 2) B. (x − 6) C. (x + 3) D. (x − 4)
Answer:
D
Step-by-step explanation:
To factor a quadratic you need to think about what adds up to the b coefficient (the number in front of b) and multiplies to the constant. 3 and 4 do these, but you also know that you have -7 instead of positive 7. A negative times a negative is equal to a positive, which you can do (x-3)(x-4) to equal your quadratic trinomial.
Estimate the square root to the nearest (a) integer and (b) tenth.
√-335/2
I had the same question on my homework.
Answers:
a) -13
b) -12.9
Find the area. Will mark brainliest.
Answer:
Area of shaded part of triangle
=(18*12/2)-(10*12/2)
48mm²
Jack is trying to figure out a rule for this table. He comes to the conclusion that the rule is f(x)= 3%. Why is Jack's rule incorrect?
Answer:
B) [tex]3^{4} \neq 243[/tex]
Step-by-step explanation:
Which expression is equivalent to
-80 ?
Answer
oof i need that to i would answer but im late too
Step-by-step explanation:
sorry
What if the diameter of the inner sphere is 1.8 meters. What is the volume of the inflated space?
Answer:
Volume is 3.05m³
Step-by-step explanation:
This problem bothers on the mensuration of solid shapes, sphere
Step one
The formula for the volume of a sphere is expressed as
V=4/3πr³
Step two
Given data
Diameter d = 1.8m
Radius r = d/2= 1.8/2= 0.9m
Step three
Substituting our given data we have
V= 4/3*3.142*0.9³
V= 4/3*3.142*0.729
V= 9.162/3
V=3.05m³
1
Which expression is equivalent to 24 3?
O 213
23/3
276
23/6
please help!
Answer:
B 2 [tex]\sqrt[3]{3}[/tex]
Step-by-step explanation:
24 ^ 1/3
WE know that (ab) ^ c = a^ c * b*c
24 ^ 1/3 = 8^1/3 * 3 ^1/3
= 2 * 3 ^1/3
The value of equivalent expression is,
⇒ 2∛3
What is an expression?Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.
We have to given that;
Expression is,
⇒ [tex]24^{\frac{1}{3} }[/tex]
Now, We can simplify as;
⇒ [tex]24^{\frac{1}{3} }[/tex]
⇒ [tex](8 * 3)^{\frac{1}{3} }[/tex]
⇒ [tex](2^{3} * 3)^{1/3}[/tex]
⇒ 2∛3
Thus, The value of equivalent expression is,
⇒ 2∛3
Learn more about the mathematical expression visit:
brainly.com/question/1859113
#SPJ7
A circle has a radius of 5/3 units and is centered at (9.2 -7.4)
Write the equation of the Circle.
*PLEASE HELP MEEEEEEEEE*
Answer:no
Step-by-step explanation:
Bc no
A restaurant added a new outdoor section that was 40 ft'. It
was 4 feet wide. How long is their new section?
Answer: 10
Step-by-step explanation:40 ft is the height and 4is the width so divide 40 by 4 and 10 is your answer
Will Mark Brainliest
Parabola: You must include the focus, vertex, lactus rectum, directrix, and the domain from the equation: y=-(x-0)^2 +15
Hyperbola: You must include the equations of the asymptotes and the domain from the equation: (2y^(2))/(b^(2))-(x^(2))/(a^(2))=7
Ellipse: You must include the foci, vertices, and eccentricity from the equation: 4x^(2)-1x+10y^(2)-50y-1=0
Answer:
Hi, i'm not trying to be rude but, you can search it up. there are many videos that explain it.
Step-by-step explanation:
f(x)=25x^2−10x+1f, left parenthesis, x, right parenthesis, equals, 25, x, squared, minus, 10, x, plus, 1
What is the value of the discriminant of f?
How many x-intercepts does the graph of f have?
PLEASE HELP
Answer:
What is the value of the discriminant of f?
0
How many x-intercepts does the graph of f?
1
Step-by-step explanation:
I promise you i just got this question and this is the answer
The discriminant of f is 0.
The function f has one intercept.
In the given quadratic function f(x) = 25x² - 10x + 1, the coefficients are:
a = 25
b = -10
c = 1
Now, let's calculate the discriminant:
Discriminant = b² - 4ac
= (-10)² - 4 x 25 x 1
= 100 - 100
= 0
The value of the discriminant of f is 0.
If the discriminant is positive (greater than 0), the quadratic equation has two distinct real roots, which means the graph intersects the x-axis at two different points.
If the discriminant is zero, the quadratic equation has one real root, and the graph touches the x-axis at one point (or has a double root).
If the discriminant is negative, the quadratic equation has no real roots, and the graph does not intersect the x-axis.
In this case, since the discriminant is 0, the graph of f has one x-intercept (or one real root).
Learn more about Discriminant here:
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A circle has a circumference of 150 meters. What is the measure of its radius? Round
to the nearest tenth.
circumference 150 m
Answer:
23.9 is the radius
Step-by-step explanation:
150/3.14 =47.7707006369
47.7707006369/2 = 23.8853503185
Round to nearest tenth = 23.9
Hope this helps!
Answer:
23.9
Step-by-step explanation:
What is the sum of 1-2 and V-18?
Answer:
v-19
Step-by-step explanation:
Answer:
It depends on what you mean.
Step-by-step explanation:
If its to separate questions,
1-2= 1
V-18= -13
If its one whole question then
1-2 - V-18= 14
1-2 / V-18= -0.07692307692
1-2 * V-18= -13
1-2 + V-18= -12
Hope this helps! :D
George Washington, Andrew Jackson, Ulysses Grant, Dwight Eisenhower
These four president were all-
Democrats
Republicans
Military leaders
College Professors
Answer:
George Washington, Andrew Jackson, Ulysses Grant, and Dwight Eisenhower were all military leaders.
Can somebody explain step by step ?
Answer:
[tex]3m\sqrt[5]{2m^4p^4}[/tex]
Step-by-step explanation:
We want to find the fifth root of [tex]486m^9p^4[/tex]. In order to do so, we need to factorise
Let's factorise 486 first:
486 = 2 * 243 = 2 * [tex]3^5[/tex]
Ah, we see that [tex]3^5[/tex] can be taken out and becomes 3 outside of the 5th root since the 5th root of
Now look at the variables. We see that since we have p^"4", whose exponent is less than 5, it's impossible for us to write it as a power of 5, so we leave this in the root.
We also have m^"9", which can be written as m^"5" * m^"4". Again, we see that the m^"4" term will have to remain inside the root, but we can take out the m^"5", which becomes m.
Our final answer is thus: [tex]3m\sqrt[5]{2m^4p^4}[/tex].
~ an aesthetics lover
Jen can bike 12 miles in 40 minutes. How much time will she need to bike 30 miles if her speed remains the same? PLEASE HELP QUICK
Answer: 100 minutes
Step-by-step explanation:
With the given information, we can use a proportion to figure out how long it would take for Jen to bike 30 miles.
[tex]\frac{12mi}{40min} =\frac{30mi}{x} \\[/tex]
[tex]12x=30*40[/tex]
[tex]12x=1200[/tex]
[tex]x=100[/tex]
