Weston completed a hypothesis test and found that he could not reject the null hypothesis. which of the following is a valid reason for his conclusion?
a. the z-statistic is less than 0.
b. the z-statistic lies in the critical region.
c. the z-statistic is greater than 0.
d. the z-statistic lies outside the critical region.

D.The z-statistic lies outside the critical region.

Step-by-step explanation:

When we run a hypothesis test , the result of that test will be a  probability value. The probability value is represented by a “p value” .

It tells us if hypothesis statement is probably true or not.

If the value falls in the rejection region, it means you have statistically significant results; You can reject the null hypothesis.

If the p-value falls outside the rejection region, it means your results aren’t enough to throw out the null hypothesis.

Hence, if Weston ound that he could not reject the null hypothesis. The z-statistic lies outside the critical region would be the valid reason for his conclusion.

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step-by-step explanation: