Rejection rule using the critical value


Suggest the following hypothesis test: Ho: µ ? 20 and Ha: µ < 20. A sample of 50 provided the sample mean of 19.4. The population standard deviation is 2.

a. Calculate the value of the test statistic.

b. What is the p-value?

c. Using a = .05, what is your conclusion?

d. What is the rejection rule using the critical value? What is your conclusion?

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Basic Statistics: Rejection rule using the critical value
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