A test preparation company wants to test its claim about the…
A test preparation company wants to test its claim about the consistency that it sees in test scores for its customers. Prior research has shown that the variance on the test is 20. The test company believes that its customers are more consistent in their scores than the general population. To test this, they sample 10 customers and find that they have a variance of 18. What is the value of the test statistic for their hypothesis test?
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