Tennis Fans The Tennis Industry Association stated that the average age of a tennis fan is 32 years. To test the claim, a researcher selected a random sample of 18 tennis fans and found that the mean...

Extracted text: Tennis Fans The Tennis Industry Association stated that the average age of a tennis fan is 32 years. To test the claim, a researcher selected a random sample of 18 tennis fans and found that the mean of their ages was 31.3 years and the standard deviation was 2.8 years.At a = =0.05 does it appear that the average age is lower than what was stated by the Tennis Industry Association? Use the P-value method, and assume the variable is approximately normally distributed. Solve using the traditional approach. a. b. Confirm your answer to part a using the P value approach.