Question

In: Statistics and Probability

Questions 36-39: Six numbers are selected at random from a random number generator and entered into...

Questions 36-39: Six numbers are selected at random from a random number generator and entered into each of four rows. The summary statistics are presented in the chart below.

	Mean	SD
Row 1	5.8	0.78
Row 2	3.6	0.23
Row 3	5.5	0.32
Row 4	4.0	0.59

Assume the populations are normal with equal variances. It is of interest to test the following:
H_o: μ₁ = μ₂ = μ₃ = μ₄

36. What are the degrees of freedom for the test statistic?: *

(A) 3 and 18

(B) 3 and 20

(C) 4 and 22

(D) 4 and 24

37. What type of test should be used here?: *

(A) F test

(B) T test

(C) Chi-square test

(D) Kolmogorov-Smirnov test

38. What is the critical value at the 0.05 significance level?: *

(A) 3.1

(B) 2.7

(C) 2.1

(D) 4.9

39. What is the correct decision?: *

(A) Reject the null, because the test statistic is larger than the critical value.

(B) Don’t reject the null, because the test statistic is smaller than the critical value.

(C) Reject the null, because the test statistic is smaller than the critical value.

(D) Don’t reject the null, because the test statistic is larger than the critical value.

Expert Solution

orchestra answered 2 years ago

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