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In a case of ` failure-terminated ' lifetime testing, 15 failures are observed in a total operation time T = 178.2 hrs. Assume that the

In a case of `failure-terminated' lifetime testing, 15 failures are observed in a total operation time T = 178.2 hrs.

Assume that the failure times are independent Exponential random variables with mean .

You seek to conduct a chi-square test of the hypotheses

H0: = 9

H1: > 9.

Evaluate the p-value of the test.(give answers correct to 3 decimal places)

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