the residents of town x participated in a survey to determine the number of hours per week each resident spent watching television. the distribution of the results of the survey had a mean of 21 hours and a standard deviation of 6 hours. the number of hours that pat, a resident of town x, watched television last week was between 1 and 2 standard deviations below the mean. which of the following could be the number of hours that pat watched television last week?
