1. Which of the following is the best description of a p-value when trying to de

ID: 3220090 • Letter: 1

Question

1. Which of the following is the best description of a p-value when trying to decide if the means of two groups differ?

A.) A p-value measures the strength of the evidence as provided by the data that the sample means differ.

B.) A p-value measures the strength of the evidence as provided by the data that in the population the average response of the two groups differs.

C.) The p-value measures the strength of the evidence as provided by the data that the two groups have the same mean.

D.)Exactly 2 of the above are correct.

Note: Its not A nor D.

The p-value is probability of obtaining test statistic as large as we get. Therefore, correct option is:

B.) A p-value measures the strength of the evidence as provided by the data that in the population the average response of the two groups differs.

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