4.Ho: u = 70

Ha: u 70

If you calculate x to be 71.3 with a standard deviation of 5 and sample size of 45, what is your decision regarding this hypothesis test? What if we increased the sample size to 90how does that change your conclusion?

8.The speed limit on Monmouth's campus is 15 miles per hour (MPH). You believe most cars travel on campus at much faster speeds. You get a speed gun and measure the speed of 100 cars across campus and find the average speed is 18 MPH with a standard deviation of 12 MPH. Develop the appropriate hypothesis test, calculate the p-value and explain your decision.

9.You believe that your significant other is not communicating with you as much. You find that over the past several weeks, the person sent you 90 text messages per week for a total of 255 texts with a standard deviation of 50 texts. Last week, this person texted you 83 times. Setup and test a hypothesis to see if he/she did text you less last week. What's your conclusion?

10. The average number of hours college students work each week is 10 hours. Let's

say we sample 60 Monmouth students and find that they work an average of 9 hours per week and a standard deviation of 7 hours. Develop and test a hypothesis to see if Monmouth students work less than other college students.

ALL QUESTIONS USE EXCEL