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Author Question: Test scores on a standardized test from samples of students from two universities are given ... (Read 140 times)

zl00505

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on: Mar 25, 2023

Question 1

Six observations were selected from each of three populations. The data obtained is shown below.

 

Sample 1

Sample 2

Sample 3

31

31

37

28

32

36

34

33

39

32

30

40

26

32

35

29

34

35


 

a.Compute the overall sample mean .
b.Test at the α = 0.05 level to determine if there is a significant difference in the means of the three populations.



Question 2

Test scores on a standardized test from samples of students from two universities are given below.

 

 

UA

UB

Sample Size

28

41

Average Test Score

84

82

Variance

64

100


Provide a 98% confidence interval estimate for the difference between the test scores of the two universities.

Essentials of Statistics for Business and Economics ¦ Anderson, Sweeney, Williams, Camm, Cochran ¦ 7th Edition
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Marked as best answer by zl00505 on Mar 25, 2023

ElaneShive

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Reply #1 on: Mar 25, 2023
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zl00505

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Reply 2 on: Mar 25, 2023
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ricroger

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Reply 3 on: Yesterday
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