A drug which is used for treating diabetes has potentially dangerous side effects if it is taken at an improper dosage. The drug is manufactured at two different plants, plant A and plant B. A medical researcher believes that tablet A has a different variance in dosage than the variance in dosage from tablet B. The sample variance of a sample of 1515 dosages of tablet A is 0.0190.019 . The sample variance of a sample of 77 dosages of tablet B is 0.0070.007 . Test the claim using a 0.050.05 level of significance. Let 2112 represent the population variance for tablet A.

Step3of5:

Compute the value of the test statistic. Round your answer to four decimal places.