# Expert answer:MAT510 WK9 Confidence Interval & Proportions of Se

Solved by verified expert:Week 9 Homework Assignment 8 – Submit HereHomework Assignment 8Due in Week 9 and worth 30 pointsSuppose 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 BikeTotal sold 185 123Service 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.
MAT510 Homework Assignment 8.docx
week_9_homework_assignment_8_05_29_19.docx

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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:
Total sold
185
Service contracts
67
Exercise Bike
123
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:
1.
2.
Construct a 95 percent confidence interval for the difference between the proportions of service contracts sold on
Is there a major difference between the two pieces of equipment? Why or why not?
above.
MAT510 Homework Assignment 8.docx

attachment

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