MAT510 WK9 Confidence Interval & Proportions of Service Contracts HW8
MAT510 WK9 Confidence Interval & Proportions of Service Contracts HW8
Week 9 Homework Assignment 8 – Submit Here
Homework Assignment 8
Due in Week 9 and worth 30 points
Suppose the number of equipment sales and service contracts that a store sold during the last six (6) months for treadmills and exercise bikes was as follows:
Treadmill Exercise Bike
Total sold 185 123
Service contracts 67 55
The store can only sell a service contract on a new piece of equipment. Of the 185 treadmills sold, 67 included a service contract and 118 did not.
Complete the following questions in the space provided below:
- Construct a 95 percent confidence interval for the difference between the proportions of service contracts sold on treadmills versus exercise bikes.
- Is there a major difference between the two pieces of equipment? Why or why not?
Download the homework below, type your answers into the document and submit it using the link located above.
