have to get 100%. thank youi just need the answers like the previous one. if you have any question please let me know.

regression_and_sampling.xlsx

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Regression

Question 1

Consider the following sample data for the relationship between advertising bu

Observation

1

2

3

4

5

Advertising ($)

90,000 100,000 100,000 110,000 120,000

Sales ($)

535,000 626,000 625,000 674,000 712,000

What is the slope of the “least-squares” best-fit regression line?

Please round your answer to the nearest hundredth.

Note that the correct answer will be evaluated based on the full-precision resul

Question 2

Consider the following sample data for the relationship between advertising bu

Observation

1

2

3

4

5

Advertising ($)

30,000

30,000

40,000

50,000

50,000

Sales ($)

179,000 183,000 253,000 308,000 301,000

What is the predicted sales quantity for an advertising budget of $57,000?

Please round your answer to the nearest integer.

Note that the correct answer will be evaluated based on the full-precision resul

Question 3

Consider the following sample data for the relationship between advertising bu

Observation

1

2

3

4

5

Advertising ($)

40,000

50,000

50,000

60,000

70,000

Sales ($)

240,000 308,000 315,000 358,000 425,000

What is the R2 coefficient of determination value for the relationship betw

Please round your answer to the nearest hundredth.

Note that the correct answer will be evaluated based on the full-precision resul

Sampling

Question 1

Sales volume last weekend for a sample of ten car dealerships were as follows:

Data Point

1

2

3

4

5

# Sales

23

13

37

46

20

What is the mean of the sample data?

Please round your answer to the nearest tenth.

Note that the correct answer will be evaluated based on the full-precision resul

Qusetion 2

Sales volume last weekend for a sample of ten car dealerships were as follows:

Data Point

1

2

3

4

5

# Sales

21

10

19

35

23

What is the variance of the sample data?

Please round your answer to the nearest tenth.

Note that the correct answer will be evaluated based on the full-precision resul

Question 3

Sales volume last weekend for four samples, each consisting

Data Point

1

2

3

4

Sample 1

26

45

36

28

Sample 2

15

31

17

24

Sample 3

25

43

17

39

Sample 4

32

35

50

33

of five car dealers

5

46

43

28

27

What is the mean of the distribution of sample means?

Please round your answer to the nearest tenth.

Note that the correct answer will be evaluated based on the full-precision resul

Question 4

Sales volume last weekend for four samples, each consisting

Data Point

1

2

3

4

Sample 1

23

13

37

46

Sample 2

15

26

45

33

Sample 3

44

23

35

18

Sample 4

48

37

21

30

of five car dealers

5

20

38

29

19

What is the standard deviation of the distribution of sample means?

Please round your answer to the nearest tenth.

Note that the correct answer will be evaluated based on the full-precision resul

Question 5

The mean is 47.1 and the standard deviation is 9.5 for a population.

Using the Central Limit Theorem, what is the standard deviation of the dis

Please round your answer to the nearest tenth.

Note that the correct answer will be evaluated based on the full-precision resul

Question 6

Suppose your marketing colleague used a known population mean and standar

What is the standard error for the new sample size?

Please round your answer to the nearest tenth.

Note that the correct answer will be evaluated based on the full-precision resul

between advertising budget and sales for Product A:

6

7

8

9

120,000 130,000 140,000 140,000

725,000 809,000 832,000 845,000

10

150,000

919,000

ression line?

n the full-precision result you would obtain using Excel.

between advertising budget and sales for Product A:

6

7

8

9

50,000

60,000

70,000

80,000

308,000 376,000 418,000 486,000

10

80,000

499,000

ng budget of $57,000?

n the full-precision result you would obtain using Excel.

between advertising budget and sales for Product A:

6

7

8

9

70,000

80,000

80,000

90,000

440,000 499,000 494,000 536,000

10

100,000

604,000

the relationship between advertising and sales?

n the full-precision result you would obtain using Excel

erships were as follows:

6

7

8

9

10

15

26

45

33

38

n the full-precision result you would obtain using Excel.

erships were as follows:

6

34

7

44

8

29

9

15

n the full-precision result you would obtain using Excel.

sting of five car dealerships, were as follows:

n the full-precision result you would obtain using Excel.

sting of five car dealerships, were as follows:

sample means?

n the full-precision result you would obtain using Excel.

10

30

rd deviation of the distribution of sample means for samples of size 60?

ation mean and standard deviation to compute the standard error as 56.4 for samples of a particula

r samples of a particular size. You don’t know the particular sample size but your colleague told you

your colleague told you that the sample size is greater than 70. Your boss asks what the standard

asks what the standard error would be if you triple the sample size.

…

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