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Suppose that IQs of adult Canadians follow a normal distribution with standard deviation 15. A random...

Suppose that IQs of adult Canadians follow a normal distribution with standard deviation 15. A random sample of 30 adult Canadians has a mean IQ of 112.

At the 7% level of significance, we would like to test whether the true mean IQ of all adult Canadians is less than 115. What is the P-value for the appropriate test of significance? Keep 4 decimal places in intermediate calculations and report your final answer to 4 decimal places.

Math   Statistics-And-Probability   
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