The number of hours per week that the television is turned on is determined for each family in a sample. The mean of the data is 33 33 hours and the median is 29.2 29.2 hours. Twenty-four of the families in the sample turned on the television for 18 18 hours or less for the week. The 16th percentile of the data is 18 18 hoursApproximately how many families are in the sample?