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DarkendSinz30
 3 years ago
I need help with this question Anyone please....
DarkendSinz30
 3 years ago
I need help with this question Anyone please....

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DarkendSinz30
 3 years ago
Best ResponseYou've already chosen the best response.0Assume that the population of heights of male college students is approximately normally distributed with mean of 72.15 inches and standard deviation of 6.39 inches. A random sample of 96 heights is obtained. Show all work. (A) Find P(x>73.25) (B) Find the mean and standard error of the xˉ distribution (C) Find P(xˉ > 73.25) (D) Why is the formula required to solve (A) different than (C)?

jim_thompson5910
 3 years ago
Best ResponseYou've already chosen the best response.1for A and C, you need a calculator or a table

jim_thompson5910
 3 years ago
Best ResponseYou've already chosen the best response.1for part b), the mean is xbar = 72.15 (since the mean of the xbar distribution is the population mean) and the standard error is sigma/sqrt(n) = 6.39/sqrt(96) = 0.6521766

jim_thompson5910
 3 years ago
Best ResponseYou've already chosen the best response.1in part D, the difference between the two formulas comes from the fact that the standard deviations are different (in the population, it's 6.39, but in the xbar distribution, it's 0.6521766)

DarkendSinz30
 3 years ago
Best ResponseYou've already chosen the best response.0okay thanks I see what your saying now
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