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The college bookstore tells prospective students that the average cost of its textbooks is $52 with...

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Basic Math

The college bookstore tells prospective students that theaverage cost of its textbooks is $52 with a standard deviation of$4.50. A group of smart statistics students thinks that the averagecost is higher. In order to test the bookstore’s claim againsttheir alternative, the students will select a random sample of size100. Assume that the mean from their random sample is $52.80. Testat 10% significance level.

--> Perform a hypothesis test and state your decision.

Answer & Explanation Solved by verified expert
4.1 Ratings (711 Votes)
Solution 525280s 450n 100This is the right tailed test The null and alternative    See Answer
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