Bookstores like education, one reason being that educated people are more likely to spend money on books. National data show the nationwide average education level to be 13 years of schooling completed for persons age 18 and over. A bookstore's manager is doing a market survey in a certain county and believes that the county's average educational level in years of schooling is higher than the national average. She takes a simple random sample of 100 people age 18 and over and finds that the sample average educational level to be 14 years, and the sample SD to be 5 years. Please perform a test of significance to determine whether the difference in average educational level between the sample and the nation can be explained by chance variation. What is the p-value? Use three decimals.
Bookstores like education, one reason being that educated people are more likely to spend money on books. National data show the nationwide average education level to be 13 years of schooling completed for persons age 18 and over.
A bookstore's manager is doing a market survey in a certain county and believes that the county's average educational level in years of schooling is higher than the national average. She takes a simple random sample of 100 people age 18 and over and finds that the sample average educational level to be 14 years, and the sample SD to be 5 years. Please perform a test of significance to determine whether the difference in average educational level between the sample and the nation can be explained by chance variation.
What is the p-value? Use three decimals.
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