State the conclusion based on the results of the test. According to the report,

Question

State the conclusion based on the results of the test.

According to the report, the standard deviation of standard deviation of monthly cell phone bills was $48.45 three years ago. A researcher suspects that the standard deviation ofstandard deviation of monthly cell phone bills is different today. The null hypothesis is not rejected.

Choose the correct answer below.

A. There is sufficient evidence to conclude that the standard deviation ofstandard deviation of monthly cell phone bills is higher than its level three years ago of $48.45.

B. There is sufficient evidence to conclude that the standard deviation ofstandard deviation of monthly cell phone bills is different from its level three years ago of $48.45.

C. There is not sufficient evidence to conclude that the standard deviation of monthly cell phone bills is different from its level three years ago of $48.45.

Explanation / Answer

Since we have given null hypothesis is not rejected, it is clear that we do not have sufficient evidence to reject

null hypothesis.

So we have to accept null hypothesis.

Therefore answer is c)

There is not sufficient evidence to conclude that the standard deviation of monthly cell phone bills is different from

its level three years ago of $48.45

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