A study estimate the mean annual people income for people living in public housing in California. for a random sample of 30 ppl the annual incomes are: 83, 90, 77, 100, 83, 64, 78, 92, 73, 122, 96, 60, 85, 86, 108, 70, 139, 56, 94, 84, 111, 93, 120, 70, 92, 100, 124, 59, 112, 79.
a. construct a stem and leaf plot of the income. what do you predict about the shape of the population distribution.
b. complete the following sentence. Fifty percent of the data falls below $ ______.
c. Find the point estimate for the population mean and standard deviation.
d. construct and interpret a 95% confidence interval for.