The heights were measured for nine supermodels they have a mean of 68.6 in. and a standard deviation of 2.3in. ...

15.) (show Work) The heights were measured for nine supermodels they have a mean of 68.6 in. and a standard deviation of 2.3in. use the traditional method and a 0.01 significance level to test the claim that supermodels have heights with a mean that is greater than the mean of 63.6 in. for women from the general population