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A researcher claims that the variance of the number of forest firesis greater th

ID: 2949996 • Letter: A

Question

A researcher claims that the variance of the number of forest firesis greater than 130. For a 13-year period, the variance of thenumber of forest fires is 127. Test the claim at =0.01.Is there enough evidence to support the claim that the variance isgreater than 130 ? Yes or No? A researcher claims that the variance of the number of forest firesis greater than 130. For a 13-year period, the variance of thenumber of forest fires is 127. Test the claim at =0.01.Is there enough evidence to support the claim that the variance isgreater than 130 ? Yes or No?

Explanation / Answer

No. because the mean no. of fires should also be given to test the claim. hence there is not enough evidence to claim that variance is greater than 130