Question 1

For each of the following hypotheses, decide which statistic should be used:
-There is no difference in yearly salary among four regions of the country (east, west, south, and north). _________

Accepted Answer

ANOVA or F test

Question 2

For each of the following hypotheses, decide which statistic should be used:
-There is a difference in scores on a satisfaction scale between salaried and hourly employees. _________

Accepted Answer

t-test

Question 3

For each of the following hypotheses, decide which statistic should be used:
-There is no relationship between mean number of children and religion practiced. __________

Accepted Answer

ANOVA

Question 4

A survey about classical musical tastes measures liking or disliking using a 10 point scale where a 10 = likes very much. Here are the findings:
College graduates mean = 5.7
Non college-grads mean = 4.1
t value = 12.2, p < .001
-Why is a t-test being used here?

Accepted Answer

The answer of A survey about classical musical tastes measures...

Question 5

A survey about classical musical tastes measures liking or disliking using a 10 point scale where a 10 = likes very much. Here are the findings:
College graduates mean = 5.7
Non college-grads mean = 4.1
t value = 12.2, p < .001
-Interpret what you are finding for fellow statistical experts.

Accepted Answer

The answer of A survey about classical musical tastes measures...

Question 6

A survey about classical musical tastes measures liking or disliking using a 10 point scale where a 10 = likes very much. Here are the findings:
College graduates mean = 5.7
Non college-grads mean = 4.1
t value = 12.2, p < .001
-What do you tell the general public you have discovered?

Accepted Answer

The answer of A survey about classical musical tastes measures...

Question 7

When comparing the scores on a satisfaction scale for a group of workers before and after new salaries were provided, it is best to test the difference in mean satisfaction scores using

Accepted Answer

Since the satisfaction scores are being compared for the same group of workers before and after a change (new salaries), the appropriate statistical test is a paired samples t-test. This test is used to compare the means of two related samples.

Question 8

Explain "confidence interval."

Accepted Answer

The answer of Explain "confidence interval."...

Question 9

What statistics would be most useful to test whether you reject or accept the null hypothesis?
-there is no difference in spending habits (money spent) between teenage boys and teenage girls _______

Accepted Answer