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MAT 510 WEEK 9 HOMEWORK ASSIGNMENT 8

MAT 510 WEEK 9 HOMEWORK ASSIGNMENT 8

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MAT 510 WEEK 9 HOMEWORK ASSIGNMENT 8

Question Description

MAT510 Week 9 Homework Assignment 8 STR

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                   195                           133

Service contracts       77                             55

The store can only sell a service contract on a new piece of equipment. Of the 195 treadmills sold, 77 included a service contract and 118 did not.

Complete the following questions in the space provided below:

1.     1.     Construct a 95 percent confidence interval for the difference between the proportions of service contracts sold on treadmills versus exercise bikes.

2.     2.    Is there a major difference between the two pieces of equipment? Why or why not?

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