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Write the word or phrase that best completes each statement or answers the question. Test the...

Write the word or phrase that best completes each statement or answers the question. Test the claim that σ2 ≥ 10.8 if n = 15, s2 = 9, and α = 0.05. Assume that the population is normally distributed.

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Answer #1

We have given,          
          
Population variance =10.8
Sample variance = 9
Sample size=15
Degree of freedom=n-1=14
Test Statistic          

P value = 0.6435................by using Excel =CHIDIST(11.536,14)

P value > 0.05

Therefore, we fail to reject H0 at

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