Strayer MAT510 2020 January Week 9 Homework Assignment 6 Latest

MAT510 Business Statistics

Homework 9 Assignment 6

Homework Assignment 6

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:

Equipment Sales and Service Contracts Sold

             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:

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

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