3 PART QUESTION

please help!! I don't know what i'm doing wrong, i think i'm rounding off bad.

1.

The distribution of the number of hours that a random sample of people spend doing chores per week is shown in the pie chart. Use 32 as the midpoint for "30+ hours." Make a frequency distribution for the data. Then use the table to estimate the sample mean and the sample standard deviation of the data set. K Click the icon to view the pie chart. Weekly Chore Hours First construct the frequency distribution. Class Frequency, f 0 4 I 0-4 hours (4 people) I 5-9 hours (10 people) 5-9 C 10-14 hours (20 people) 10-14 15-19 hours (17 people) E 20~24 hours (16 people) 15-19 25-29 hours (10 people) 20_24 l 30+ hours (4 people) 25-29 30+ .@