Posted by **steven** on Tuesday, April 13, 2010 at 9:35pm.

if young men thought that their own level of muscle was about what women prefer, the mean "muscle gap" in the study would be 0. we suspect that young men think women prefer more muscle than they themselves have.

a)what is the value of he test statistic Z?

b)you can tell from the value of Z that the evidence in favor of the alternative is very strong(that is the p-value is very small). explain why this is true.

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