Ken believes the average age of men who come to get a haircut at his barber...
Ken believes the average age of men who come to get a haircut at his barber shop is 40 or under. After getting age data from 60 customers who were randomly selected, the average age of the sample was computed as 50. Use a value of 2% for the probability of a Type 1 error. If the standard deviation for male customers’ age is 8.0 years, determine the following: a. Is there enough evidence from the sample of 60 customers to challenge Ken’s claim? Explain the reason for your answer. b. What is the p-value based the information given above? Show how you determined the answer. c. Repeat part ‘a’ if the average age of 50 was based on 100 random male customers.
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Ken believes the average age of men who come to get a haircut at
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