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At a certain university, the average attendance at basketball games has been 3125. Due to the dismal showing of the team this year, the attendance for the first 9 games has averaged only 2915 with a standard deviation of 585. The athletic director claims that the attendance is the same as last year. What is the test statistic needed to evaluate the claim

User Gempir
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1 Answer

13 votes
13 votes

Answer:

The test statistic needed to evaluate the claim is t = -1.08.

Explanation:

The test statistic is:


image

In which X is the sample mean,
image is the expected value of the mean, s is the standard deviation of the sample and n is the size of the sample.

At a certain university, the average attendance at basketball games has been 3125. The athletic director claims that the attendance is the same as last year.

This means that
image

Due to the dismal showing of the team this year, the attendance for the first 9 games has averaged only 2915 with a standard deviation of 585.

This means that
image

What is the test statistic needed to evaluate the claim?


image


image


image

The test statistic needed to evaluate the claim is t = -1.08.

User Nerlande
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3.0k points