Question

A consumer agency has compiled grocery bills (in dollars) from random samples of supermarket customers in Florida and Georgia. Assuming the population variances are not equal, use the Excel output below to identify whether each of the following conclusions is correct.

You must make a selection for each option. Click once to place a check mark for correct answers and click twice to place an "x" for the wrong answers.

• At the 2.5% significance level, conclude that the average grocery bill differs between Florida and Georgia.unchecked
• At the 5% significance level, conclude that the average grocery bill differs between Florida and Georgia.unchecked
• At the 5% significance level, the unequal population variance assumption is supported.unchecked
• At the 10% significance level, the unequal population variance assumption is supported.checked

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Hypothesis Test: Independent Groups (t-test, unequal variance)

Florida	Georgia
154.85	141.60	mean
29.44	21.54	std. dev.
35	35	n

62	df
13.250	difference (Florida – Georgia)
6.166	Standard error of difference
0	hypothesized difference
2.15	t
0.0355	p-value (two-tailed)

F-Test for Equality of Variance

866.714	Variance: Florida
463.972	Variance: Georgia
1.87	F
0.0723	p-value

Answer 1