SOLUTION: The average age of a group of men is 37 years with a standard deviation of 4 years. If there are 25 men, what is the probability that the average age of the group is greater than

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Question 406100: The average age of a group of men is 37 years with a standard deviation of 4 years. If there are 25 men, what is the probability that the average age of the group is greater than 38.2 years old
Please show me the formula and the answer
Thank you
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi

*Note: z+=blue+%28x+-+mu%29%2Fblue%28sigma%2Fsqrt%28n%29%29

z+=blue+%2838.2+-+37%29%2Fblue%284%2F5%29%29 = 1.2/.8 = 1.5

P( z >1.5 ) = 1-.9332 = .0668