Construct a confidence interval for the given difference

Assignment Help Basic Statistics

Reference no: EM131744573

Assignment

Suppose the number of equipment sales and service contracts that a store sold during the last six 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 answers 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?

Reference no: EM131744573

Questions Cloud

Determine whether different sites were populated : Archaeologists can use the chemical composition of clay found in pottery artifacts to determine whether different sites were populated

What options does the company have to meet long-term goals : What options does the company have to meet the short- and long-term goals? What resources will you need to seek out?

What is the probability that the tenth machine examined : What is the probability that the second computer examined will be the first to have malware? Write a Solution Trail for this problem

Discuss researchers in the adirondack mountains collect data : Streams. Researchers in the Adirondack Mountains collect data on a random sample of streams each year

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

Develop metrics to quantify the level of improvement : Explain the metrics and processes that you will use to monitor and sustain planned improvements for the organization.

Who are the primary consumers of business plans : Who are the primary consumers of business plans? In what ways do the people who read business plans differ in the information they are looking for?

How culture intertwines with ethics in a global environment : Describe how culture intertwines with ethics in a global environment. Provide examples. Address each of the elements of ethical decision-making.

Five servings of fruits and vegetables per day : Can you conclude that earning a college degree will cause you to eat five servings of fruits and vegetables per day? Explain your answer.

User Account

All Pages