| Name:____________________________________________________________Date:___________________
AP Statistics 10.2 Worksheet #2
1. A consumer education organization claims that there is a difference in the mean credit card debt of males and females in the United States. The results of a random survey of 200 hundred individuals from each group are:
|
Females
|
Males
|
Mean
|
$2,290
|
$2,370
|
Stand. Dev.
|
$750
|
$800
|
Sample Size
|
200
|
200
|
At the 5% significance level, do the results support the organization’s claim?
2. The American Automobile Association claims that the average daily meal and lodging cost for vacationing in Texas are greater than the same average costs for vacationing in Virginia. The results are:
|
Texas
|
Virginia
|
Mean
|
$248
|
$252
|
Stand. Dev.
|
$15
|
$22
|
Sample Size
|
50
|
35
|
At the 1% significance level, is there enough evidence to support claim?
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