Project 3 Due No Later Than May

Project 3 Due No Later than May

Use the Minitab printouts that can be found on the website to help you answer the following problems (called: Minitab printouts for project 3). You must show all steps for the hypothesis testing; use either the critical value approach or the p-value approach.

1) a) Choose one of the following quantitative variables from the data set: Age, Weight, Cell Phone, Study, TV, Sleep, Pets, or Work.

b) Find a 95% confidence interval for the population mean [variable] of all MCCC students.

c) Find a 95% confidence interval for the population mean [variable] of all female MCCC students.

d) Find a 95% confidence interval for the population mean [variable] of all male MCCC students.

e) Interpret each interval and compare the intervals.

2) a) Find a 99% confidence interval for the population mean age for all MCCC students’ fathers.

b) Find a 99% confidence interval for the population mean age for all MCCC students’ mothers.

c) Interpret each interval and compare intervals.

3) Find a 95% confidence interval for the population mean GPA score for all MCCC students. Interpret your results.

4) Test the hypothesis that the population GPA of all students in MAT125 is not equal to 2.95.

(Note: Choose a level of significance α = 0.1, 0.05, 0.01)

5) Test the hypothesis that the population mean age of all students in MAT125is less than 26 years old.

(Note: Choose a level of significance α = 0.1, 0.05, 0.01)

6)Choose one of the following(Note:α =0.05):

a) Test the hypothesis that the population mean weight of all MCCC students is less than 165 pounds.

b) Test the hypothesis that the population mean amount of time all MCCC students study per day is less than 3.5 hours.

c) Test the hypothesis that the population mean amount of time all MCCC students spending sleeping is less than 7.5 hours per day.

7) Choose one of the following(Note: α = 0.05):

a) Test the hypothesis that the population mean amount of time all MCCC students work per week is more than 20 hours.

b) Test the hypothesis that the population mean amount of time all MCCC students watch television per day is more than 2 hours.

c) Test the hypothesis that the population mean amount of time all MCCC students use a cell phone per day is more than 4.5 hours.