Question

A sample of size n=20 has sample mean equal to 10.5. We wish to test the null hypothesis H0: mean=10 versus alternative hypothesis H1: mean is not equal to 10, under the assumption that the data follow a normal distribution with known population variance sigma^2=4. Find the p-value. The following cumulative distribution function values for the standard normal distribution can be useful: cdf(0.5)=0.69, cdf(1.11)=0.87, cdf(2.11)=0.98. Choose the closest value

Answer 1

Answer:

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