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pleaseeee show work and if possible calculator steps on ti-84+ A standardized test is given to...

pleaseeee show work and if possible calculator steps on ti-84+

A standardized test is given to a fifth grade class and a sixth grade class. The superintendent believes that the variance in performance from the fifth grade class is greater than the variance in performance from the sixth grade class. The sample variance of a sample of 18 test scores from the fifth grade class is 20.05 . The sample variance of a sample of 4 test scores from the sixth grade class is 14.88 . Test the claim using a 0.1 level of significance. Let σ21 represent the population variance for fifth grade class. Step 3 of 5 : Compute the value of the test statistic. Round your answer to four decimal places.

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You asked only value of test statistic. But I solved fully. I gave all steps.

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