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:
Is there a major difference between the two pieces of equipment? Why or why not?
Ans : No, because the confidence interval contains 0.
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