Assume that the mean number of sick days an employee takes per year is normally distributed with a mean of ten days. Members of a personnel team do not believe this figure. They randomly survey eight employees. The number of sick days they took for the past year are as follows: 12; 4; 15; 3; 11; 8; 6; 8. Test the hypothesis that the mean number of sick days an employee takes per year differs from ten days with = 0.10.