A study estimate the mean annual people income for people

Reference no: EM13609202

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.

Reference no: EM13609202

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