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Assume that the heights in Exercise 32 are normally distributed. Are you more likely to randomly select 1 man with a height less than 65 inches or are you more likely to select a sample of 15 men with a mean height less than 65 inches? Explain.
Exercise 32
The mean height of men in the United States (ages 20–29) is 69.4 inches. A random sample of 60 men in this age group is selected. What is the probability that the mean height for the sample is greater than 70 inches? Assume σ = 2.9 inches. |
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