Lajos performs a hypothesis test to see if a coin is fair He

Lajos performs a hypothesis test to see if a coin is fair. He computes that the P-value of the test is about .07 (which is 7%). What is the correct interpretation of this?

A. If the coin was fair, the probability it would produce such “unfair results” in the sample is 7%.
B. The probability that the coin is fair is 7%.
C. The coin is fair 7% of the time.
D. The coin turns up heads about 7% of the time.

Solution

The p value is the probability that the null hypothesis (fair coin) produces a certain result by chance. Thus, it is

A. If the coin was fair, the probability it would produce such “unfair results” in the sample is 7%.