How would you do these questions?

How Would You Do These Questions?
How Would You Do These Questions?

Answers

Answer 1

Part 1

Population = {1,2,4}

Sample 1 = {1,1}, probablity = 1/9

Sample 2 = {1,2}, probablity = 1/9

Sample 3 = {1,4}, probablity = 1/9

Sample 4 = {2,1}, probablity = 1/9

Sample 5 = {2,2}, probablity = 1/9

Sample 6 = {2,4}, probablity = 1/9

Sample 7 = {4,1}, probablity = 1/9

Sample 8 = {4,2}, probablity = 1/9

Sample 9 = {4,4}, probablity = 1/9

Each of the 9 samples has equal probablity of occuring, so that's why each probablity is 1/9

Note: it may be best to write the above in the form of a table

==================================================

Part 2

For each sample (1 through 9), compute the mean. So we'll add up the values and divide by 2

xbar represents the sample mean

Sample 1 = {1,1}, xbar = 1

Sample 2 = {1,2}, xbar = 1.5

Sample 3 = {1,4}, xbar = 2.5

Sample 4 = {2,1}, xbar = 1.5

Sample 5 = {2,2}, xbar = 2

Sample 6 = {2,4}, xbar = 3

Sample 7 = {4,1}, xbar = 2.5

Sample 8 = {4,2}, xbar = 3

Sample 9 = {4,4}, xbar = 4

----------

Now let's list out each possible xbar value and its associated probability

xbar = 1, probability = 1/9

xbar = 1.5, probability = 2/9

xbar = 2, probability = 1/9

xbar = 2.5, probability = 2/9

xbar = 3, probability = 2/9

xbar = 4, probability = 1/9

note how the probabilities listed above add to 9/9 = 1.

Again a table is ideal to help organize the data.

==================================================

Part 3

To calculate the value of mu_x, we add up all the xbar values found in part 2, and divide by 9

(1+1.5+2.5+1.5+2+3+2.5+3+4)/9 = 2.333

So mu_x = 2.333 approximately

----------

Calculating the standard deviation is a bit lengthier, but you subtract each data value from the mean, square each difference, and add up the squares.

Afterward, you divide by n = 9 to get the population variance. Apply the square root to get the population standard deviation.

Luckily a calculator or spreadsheet can make quick work of this. You should get roughly 0.88192 as the standard deviation.

==================================================

Part 4

The mean of the population {1,2,4} is (1+2+4)/3 = 2.3333 which matches with mu_xbar

The standard deviation of the population {1,2,4} is roughly 0.88191710368819 which matches with 0.88192 found earlier back in part 3.

How Would You Do These Questions?

Related Questions

HELP PLZ!

Is this graph of a function?
Yes or no

Answers

No, it’s doesn’t pass the vertical line test.

(-1/8c+16)-(3/8+3c) difference

Answers

Answer:

-25 (c-5) / 8

Negative 25 (c-5) over 8

Answer:

the answer is 15.625 in decimals and in fraction 125/8

Step-by-step explanation:

Question 5
Based on this activity, what is the minimum amount of information you need to define the shape and size of a triangle? How does this information
establish congruency between two or more triangles?
B
7
U X
X,
Font Sizes
A - AEBIE
Characters used: 0 / 15000
Submit
Self-Evaluation
How did you do? Rate your work on a scale of 1 to 5, with 5 as the highest score. Then write a brief evaluation of your work below. Note what you
learned and what challenged you

Answers

Answer:

You can establish the size and shape of a triangle if you know two angle measurements and the length of the side between the angles (ASA). Two or more triangles are congruent if their corresponding parts coincide through the ASA criterion.

Step-by-step explanation:

this is the plato answer!

Which pair of equations represents two perpendicular lines?
answers shown in picture. ​

Answers

Answer:

y =1/2x+6

y = -2x+2

Step-by-step explanation:

Perpendicular line have slopes that multiply to -1

The slopes are negative reciprocals

-4*4 = 16  not perpendicular

1/2 * -2 = -1  perpendicular

1/5 *5 = 1  not perpendicular

2/3 * 2/3 = 4/9  not perpendicular

if the diameter of a sphere is doubled, its surface becomes

Answers

The surface will become 4

The ratio of juniors to seniors in history class is 4 to 5. How many seniors are in the class if there are 12 juniors in the class?

Answers

Answer:

15

Step-by-step explanation:

4/5 4*3 is 12 5*3 is 15

Answer:

15 seniors

Step-by-step explanation:

Because, the ratio is 4:5 since there are 12 juniors you would divide by three to find out what is the value of the number you need to multiply to get how many seniors you have. In this situation the number is 3 therefore you would multiply it by 5, which would give us 15 seniors.

ANOTHER QUESTION WHAT IS THIS 7x+9=5x+15

Answers

Answer:

x=3

Step-by-step explanation:

Answer:

x=3

Step-by-step explanation:

Look at the attachment below

Hope this helps (:

What is 1 and 8/9 as a decimal?

Answers

Answer:

1.8 (the 8 is recurring)

Step-by-step explanation:

use a calculator -_-

Answer:

1 and 8/9 turns into a repeating decimal, which is 1.888888889.

X
Quadrilateral Q is reflected over the x-axis to form Q'and then over the y-axis to form Q"
What is the measure of side Sy?
10
10
Q
7
9
9
Q
8

Answers

Answer:

10 !

Step-by-step explanation:

Find the slope of the line that passes through the two points given.
(-5,-4) and (-2,-3)

M=?

Answers

Answer:

[tex]m=\frac{1}{3}[/tex]

Step-by-step explanation:

Slope Formula: [tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]

Simply plug in the coordinates into the slope formula to find slope m:

[tex]m=\frac{-3-(-4)}{-2-(-5)}[/tex]

[tex]m=\frac{-3+4}{-2+5}[/tex]

[tex]m=\frac{1}{3}[/tex]

Use the stemplot below to answer the following questions.
Stem |Leaf
9.5 |23556
9.6 |689
9.7 |246
9.8 |001557
Your answers should be exact numerical values.
What is the minimum (smallest) data value?
What is the maximum (largest) data value?
What data value shows up twice for the stem 9.5?

Answers

1. The minimum data value is 9.8.

2. The maximum data value is 9.6.

3. The data value that shows up twice for the stem 9.5 is 9.52.

To find the minimum and maximum data values, we need to examine the stemplot given:

Stem | Leaf

9.5 | 23556

9.6 | 689

9.7 | 246

9.8 | 001557

1. The minimum data value is the smallest value in the dataset. Looking at the stemplot, we see that the smallest leaf value is 0, and it corresponds to the stem 9.8. Therefore, the minimum data value is 9.8.

2. The maximum data value is the largest value in the dataset. By examining the stemplot, we find that the largest leaf value is 9, and it corresponds to the stem 9.6. Therefore, the maximum data value is 9.6.

3. Now, let's determine the data value that shows up twice for the stem 9.5. In the stemplot, we see that the stem 9.5 has two leaf values, 2 and 5. Therefore, the data value that shows up twice for the stem 9.5 is 9.52.

For more such question on data. visit :

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How many people will 3 cups of rice serve? 12 cups? 43 cups?

Answers

69 because 43 cups is 3 cups of rides in crack

I have trouble solving questions like " find the area of a circle using terms of pie"
i dont understand the formula or how to solve the question. please help

Answers

the pie formula is C=πd=2πr
pie means circumference/diameter
pie equals a circle's circumference divided by its diameter

Answer:

Step-by-step explanation:

The circumference is the perimeter of a circle.

The formula for circumference:2(pi)r or (pi)d

r=radius of a circle

d=diameter of a circle

The formula of the area of a circle:(pi)r^2

Draw the image of quadrilateral ABCD after each translation. The translation that takes B to D

Answers

draw a square and connect b to d

PLEASE HELP! I ONLY HAVE 8 MINUTES LEFT!

Answers

the range is [4, infinity], {y|y greater than or equal to 4}

Help me on this math problem

Answers

Answer:

D: t = u/9 + 7 (that is simplified all of the way) for your case it is t = u + 63/9 so D

Explanation:

Just ask if you need an explanation. Also, does anyone do LD debate?

Customer pays $0.035 per minute for local calls, if the customer made 60 local calls that all lasted 3 minutes, how much will the customer pay?

Answers

The customer will pay $6.30 for the 60 local calls that all lasted 3 minutes.


To find out how much the customer will pay, we need to calculate the total cost for all the local calls.
Step 1: Calculate the total number of minutes for all the calls
Since the customer made 60 local calls and each call lasted 3 minutes, we can multiply 60 by 3 to get the total number of minutes.
60 calls * 3 minutes/call = 180 minutes
Step 2: Calculate the total cost for all the minutes
The customer pays $0.035 per minute for local calls. To find the total cost, we can multiply the total number of minutes by the cost per minute.
180 minutes * $0.035/minute = $6.30

For more such questions on customer

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-16=m/5-18 prove m=10

Answers

Answer:

see below m= 10

Step-by-step explanation:

-16 = [tex]\frac{m}{5}[/tex] - 18

-16 + 18 = [tex]\frac{m}{5}[/tex] - 18 + 18 (add 18 to both sides so m/5 is alone)

2 = [tex]\frac{m}{5}[/tex]

2 * ([tex]\frac{5}{1}[/tex]) = [tex]\frac{m}{5}[/tex] * [tex]\frac{5}{1\\}[/tex] (cancel out the 5 by multiplying to both sides)

10 = m

The black graph is the graph of
y = f(x). Choose the equation for the red graph

Answers

Answer:

it’s b :)

Step-by-step explanation:

If a triangle has an angle of 45° and an angle of 100°, what is the third angle?

Answers

Answer:

35 degrees

Step-by-step explanation:

The sum of the angles of a triangle add to 180

45+100 +x = 180

145 +x =180

x = 180-145

x = 35

Answer:

35 degrees

Step-by-step explanation:

The sum of a triangle is 180 degrees, so add 100 +45, and you get 145

Then you subtract 180-145 and you get 35 degrees

PLEASE HELP FAST, FINAL IS TODAY!!! ‼️WILL GIVE POINTS‼️

Answers

The length of QT is given as follows:

b. 12.

What is the effect of the bisection?

A bisection means that the larger angle is divided into two smaller angles of equal measure, and the side lengths of relative to the angle are equal.

The bisection segment for this problem is given as follows:

RT.

Hence the congruent segments are:

QT and TS = 12.

Thus the length of QT is given as follows:

QT = 12.

More can be learned about angle measures at brainly.com/question/25215131

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At midnight, the temperature was -8F. At noon, the temperature was 23F. Which expression represents the increase in temperature?

Answers

Answer: 23F - (-8F)

Step-by-step explanation:
We have been given that at midnight, the temperature was . At noon, the temperature was .
Since our temperature has increased to 23 degree Fahrenheit from -8 degree Fahrenheit, we can represent this increase in temperature as:

Therefore, the expression represents the increase in temperature.

What is the first step in solving this equation? 2x - 5 = -17.4​

Answers

Answer:

Step-by-step explanation:

1.Add 5 to both sides.

2. Divide both sides by 2.

Answer:

you need to find X fist then take 2 times x and the subtract it by five to get -17.4

Step-by-step explanation:

Jordan computed in a two-way table the relative frequencies of the weather on practice days and game day during his football season

Answers

Answer:

B. There appears to be an association because the relative frequencies by row are different.

Step-by-step explanation:

I took the test.

there does not appear to be an association because the relative frequencies by column are different.

What is a two-way frequency table?

A two-way or contingency table is a statistical table that shows the observed number or frequency for two variables, the rows indicating one category and the columns indicating the other category.

Given, Jordan computed in a two-way table the relative frequencies of the weather on practice days and game days during his football season

weather                           practices                          games

raining                                   23%                             13%

not raining                             77%                              87%

Since relative frequency is the ratio (fraction or proportion) of the number of times a value of the data occurs in the set of all outcomes to the total number of outcomes.

So in our case,

There does now no longer appear as an affiliation due to the fact the relative frequencies through column are different.

Therefore, the correct statement will be C) there does not appear to be an association because the relative frequencies by column are different.

Learn more about two-way frequency tables here:

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Complete question:

Jordan computed in a two-way table the relative frequencies of the weather on practice days and game days during his football season.

weather during football

raining

not raining

practices

23%

77%

games

13%

87%

which statement best describes the relationship between the two variables?

there appears to be an association because the relative frequencies by column are different. there appears to be an association because the relative frequencies by row are different.

there does not appear to be an association because the relative frequencies by column are different.

there does not appear to be an association because the relative frequencies by row are different.

pls help me will pick brainliest

Answers

It has to be 3.4 but since this is half a square it would be whole 3

Nora is in the business of manufacturing phones. She must pay a daily fixed cost to rent the building and equipment, and also pays a cost per phone produced for materials and labor. The labor and materials cost $150 for each phone manufactured, and the total cost of producing 8 phones in a day would be $2200. Write an equation for C,C, in terms of p,p, representing total cost, in dollars, of producing pp phones in a given day.

Answers

Answer:

C=150p+1000

Step-by-step explanation:

Solve for the y-intercept:

C=50p+b Slope intercept form of a line

2200=150(8)+b

Plug in known point

2200=1200+b Multiply

1000=b

Subtract 12001200

The equation is C = 1000 + 150p

The total cost of producing a phone is the sum of the fixed cost and the variable cost

Total cost = fixed cost + variable cost

Fixed cost is the cost of producing phone that remains constant regardless the quantity of phones produced. e.g. rent

Variable cost is the  cost of producing phone that increases with the quantity of phones produced. e.g. labour cost

In order to write the equation, the fixed cost has to be determined.

Fixed cost = total cost - variable cost

Variable cost = $150 x 8 = $1200

2200 - 1200 = 1000

The equation is : C = 1000 + 150p

A similar question was solved here: https://brainly.com/question/18844532?referrer=searchResults

What is the perimeter, in units, of polygon PQRSTU? Enter your answer in the box.
y
5
o
Р
3
R
s
1
o
Х
5
3
1
1
1
3.
5
T
3.
-5

Answers

Answer:

24 units

Step-by-step explanation:

Perimeter of Polygon PQRSTU = sum of all its side lengths = PQ + QR + RS + ST + TU + PU

PQ = |-4 -(-2)| = 2 units

QR = |4 - 2| = 2 units

RS = |-2 - 2| = 4 units

ST = |2 -(-2)| = 4 units

TU = |2 -(-4)| = 6 units

PU = |4 - (-2)| = 6 units

Perimeter of Polygon PQRSTU = 2 + 2 + 4 + 4 + 6 + 6 = 24 units

Answer:

24 units

Step-by-step explanation:

2+2+4+6+2=24

Eric, Peyton and Nathan go to a Chinese restaurant from lunch and order three different platters. Eric orders 2 portions of fried rice and 1 portion of chow mien. Peyton ordered 1 portion of fried rice, 1 portion of chow mien and 1 portion of sauteed broccoli. Nathan ordered 1 potion of sauteed broccoli and 2 portions of chow mien. Eric paid $5, Peyton paid $5.25 and Nathan paid $5.75 for their meals. How much does each item cost? *

Answers

Answer:

Fried rice is $2.25Chow mien is $2.75Sauteed broccoli is $0.25

Step-by-step explanation:

Step 1: Create expressions

Assume that fried rice is x

Assume that chow mein is y

Assume that sauteed broccoli is z

Expression for Eric's order would be;

x + y = 5

Expression for Peyton's order would be;

x + y + z = 5.25

Expression for Nathan's order would be;

2y + z = 5.75

Step 2: Express in like terms

Now express z and x in terms of y so that we can solve for y;

2y + z = 5.75                                                           x + y = 5

z = 5.75 - 2y                                                            x = 5 - y

Step 3: Solve variables

Solve for y

x + y + z = 5.25

(5 - y) + y + (5.75 -2y) = 5.25

5 + 5.75 - 2y = 5.25

10.75 - 2y = 5.25

2y = 10.75 - 5.25

2y = 5.5

y = $2.75

Solve for x;

x = 5 - y

= 5 - 2.75

= $2.25

Solve for z;

= 5.75 - 2y

= 5.75 - 2 * 2.25

= $0.25

Fried rice is $2.25

Chow mien is $2.75

Sauteed broccoli is $0.25

35/22 as a decimal rounded to the nearest tenth

Answers

Answer:

1.6

Step-by-step explanation:

35/22 = 1.59

round the decimal to the tens place, or the number right after the decimal

Jennifer is saving money to buy a bike. The bike costs $254. She has $101 saved, and each week she adds
$17 to her savings.
How long will it take her to save enough money to buy the bike?

Answers

Answer:

9 weeks

Step-by-step explanation:

254 = 101 + x(17)

153=x(17)

x = 9

PLZ GIVE BRAINLIEST :)

Other Questions
Omar has a gift card for $40 at a gift shop. Omar wants to buy a hat for himself for $13.50. For his friends he would like to buy souvenir bracelets, Which are $3.25 each. All prices include taxes.A.)3.25x+13.50 40C.)13.50x+3.25 40 adapted from Wild Western Scenes: A Narrative of Adventuresby J. B. Jones "Do you see any light yet, Joe?" "Not the least speck that ever was created, except the lightning, and it's gone before I can turn my head to look at it." The interrogator, Charles Glenn, reclined musingly in a two-horse wagon, the canvas covering of which served in some measure to protect him from the wind and rain. Joe Beck was perched upon one of the horses, his shoulders screwed under the scanty folds of an oil-cloth cape as the team plunged along in a stumbling pace. Their pathway, or rather their direction, for there was no beaten road, lay along the northern bank of the "Mad Missouri," some two hundred miles above the St. Louis settlement. It was at a time when there were few men in those regions save trappers and traders. Our travelers had been told in the morning, when setting out from a temporary village which consisted of a few families, that they could attain the desired point by making the river their guide, should they be at a loss to distinguish the faintly-marked pathway that led in a more direct course to the place of destination. The storm coming up suddenly from the north, and showers of hail accompanying the gusts, caused the driver to incline his face to the left. The drenched horses, similarly influenced, had unconsciously departed far from the right line of march. Now, rather than turn his front again to the pitiless blast, which could be the only means of regaining the road, Joe preferred diverging still farther, until he should find himself on the margin of the river, by which time he hoped the storm would abate. 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Increase in stock price expectations lead to higher wealth, causing investors to increase their collection of all portfolio assets, leading to an increase in bond demand and lower future interest rates Increase in stock price expectations cause investors to flee real estate, leaving interest rates unchanged Increase in stock price expectations are reflective of an increase in expected risk, causing investors to prefer bonds, increasing bond demand and lowering interest rates Increase in stock price expectations would cause investors to move away from bonds, decreasing bond demand, Why do retailers practice price lining strategies? A. to win additional sales by creating a lower price image B. to meet federal pricing regulations C. to enhance a stave's image and reputationD. to make consumer choice easier when choosing from a store's selection If $120 doubles in approximately 13 years, what is the interest rate? 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