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23 July, 20:56

The mean height of women in a country (ages 20-29) is 64.3 inches. A random sample of 75 women in this age group is selected. What is the probability that the mean height for the sample is greater than 65 inches? Assume sigma=2.81.

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  1. 23 July, 21:14
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    z (65) = (65-64.2) / [2.81/sqrt (60) ] = 0.8 / (0.3279)
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