Posted by Theresa on Tuesday, February 19, 2013 at 4:43pm.
Heights of adult men have a mean of 69.0 inches and a standard deviation of 2.8 inches. Approximately what percentage of adult men have a height between 66.2 and 77.4 inches? Must show the number and the empirical rule

Statistic  JJ, Tuesday, February 19, 2013 at 4:51pm
You have to find z scores first.
66.269.0 then divide by 2.8
77.4  69.0 then divide by 2.8
Now, you have to find the area between those two z scores. The empirical rule tells you the % between 3 and 3 standard deviations, between 2 and 2 sds and between 1 and 1 standard deviations.

Statistic  hh, Tuesday, September 15, 2015 at 10:03pm
rgty
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