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The heat evolved in calories per gram of a cement mixture is approximately normally distributed. The population mean is thought to be 100 and the population standard deviation is 2. Data on n=9 specimens yield a sample mean of ?? = 98.5.

a. Test H0: µ=100 versus Ha: µ?100. Use the rejection region approach.

b. What is the P-value for the test in part (a)?

c. Compute a two-sided 90% confidence interval for µ.

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Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M91009165

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