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April 25, 2015

Homework Help: Stat

Posted by Jennifer on Thursday, April 21, 2011 at 2:57pm.

the mean of adult men is 172 pounds with a standard deviation of 29 pounds. ask 20 men thier weight and use excel to calculate the mean. test the hypothesis that the mean is not 172 pounds at the .10 significance level. and how many men should be sampled if you want to be 98% confident that the mean will be within an error of 3lbs.

135 131 191
168 214 139
170 197
136 178
179 154
183 158
149 200
152 211
271 186

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