Question

Are the means for the final exams the same for all statistics class delivery types? The...

Are the means for the final exams the same for all statistics class delivery types? The table below shows the scores on final exams from several randomly selected classes that used the different delivery types.

Online Hybrid Face-to-Face
72 84 80
83 73 79
76 85 85
81 82 80
82 86
79
81

Assume that all distributions are normal, the three population standard deviations are approximately the same, and the data were collected independently and randomly. Use a level of significance of 0.05.

A. Enter an exact number as an integer, fraction, or decimal.
df(num) =
B. Enter an exact number as an integer, fraction, or decimal.
df(denom) =
C. What is the test statistic? (Round your answer to two decimal places.)
D. What is the p-value? (Round your answer to four decimal places.)

F. What is the alpha? (Enter an exact number as an integer, fraction, or decimal.)

Homework Answers

Answer #1

The statistical software output for this problem is:

From above output:

a) df(Num) = 2

b) df(Denom) = 13

c) Test statistic = 0.62

d) p - Value = 0.5549

e) Alpha = 0.05

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