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To meet the standards in the shipment of a chemical product, the percentage of pollution the...

To meet the standards in the shipment of a chemical product, the percentage of pollution the variance must not exceed 4.
H0: ?2 = 4
H1: ?2 > 4

In a random sample of 20 shipments, variance of pollution percentages have been found as 5,62. Accordingly, find the power of the test for ?2 = 7

Math   Statistics-And-Probability   
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