a. Explanation Calculation: The given information is tha the 93% of adults aged 18 to 29 are uses the internet and the 21% of age 18 to 28 got married. The sample size is 500. The 95% confidence interval for population proportion is, p ¯ ± z α 2 p ¯ ( 1 − p ¯ ) n From the “Table 8.1 value of z α 2 ”, the value of z for 95% is 1.96. The value of 95% confidence interval for population proportion is, p ¯ ± z α 2 p ¯ ( 1 − p ¯ ) n = 0.93 ± ( 1 b. To determine Find the 99% confidence interval for the population proportion of adults aged 18 to 28 get married. c. To determine Find the larger margin of error in part (a) or (b).

MindTap Business Statistics, 1 term (6 months) Printed Access Card for Anderson/Sweeney/Williams/Camm/Cochran's Essentials of Statistics for Business and Economics, 8th

8th Edition

ISBN: 9781337114288

Author: Anderson, David R.; Sweeney, Dennis J.; Williams, Thomas A.; Camm, Jeffrey D.; Cochran, James J.

Publisher: Cengage Learning

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2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.

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Chapter 8, Problem 55SE

To determine

Find the 95% confidence interval for the population proportion of adults aged 18 to 29 user of internet.

To determine

Find the 99% confidence interval for the population proportion of adults aged 18 to 28 get married.

To determine

Find the larger margin of error in part (a) or (b).

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Chapter 8 Solutions

MindTap Business Statistics, 1 term (6 months) Printed Access Card for Anderson/Sweeney/Williams/Camm/Cochran's Essentials of Statistics for Business and Economics, 8th

Ch. 8.1 - A simple random sample of 40 items resulted in a...Ch. 8.1 - 2. A simple random sample of 50 items from a...Ch. 8.1 - A simple random sample of 60 items resulted in a...Ch. 8.1 - 4. A 95% confidence interval for a population mean...Ch. 8.1 - Data were collected on the amount spent by 64...Ch. 8.1 - Travel Taxes. In an attempt to assess total daily...Ch. 8.1 - 7. The average annual cost of the first year of...Ch. 8.1 - Studies show that massage therapy has a variety of...Ch. 8.1 - Cost to Repair Fire Damage. The mean cost to...Ch. 8.1 - 10. Costs are rising for all kinds of medical...

Ch. 8.2 - For a t distribution with 16 degrees of freedom,...Ch. 8.2 - Find the t value(s) for each of the following...Ch. 8.2 - The following sample data are from a normal...Ch. 8.2 - A simple random sample with n = 54 provided a...Ch. 8.2 - 15. Sales personnel for Skillings Distributors...Ch. 8.2 - Years to Bond Maturity. A sample containing years...Ch. 8.2 - Quality Ratings of Airports. The International Air...Ch. 8.2 - Unemployment in Older Workers. Older people often...Ch. 8.2 - Meal Cost in Hong Kong. The mean cost of a meal...Ch. 8.2 - Automobile Insurance Premiums. The average annual...Ch. 8.2 - Telemedicine. Health insurers are beginning to...Ch. 8.2 - Movie Ticket Sales. Marvel Studios motion picture...Ch. 8.3 - 23. How large a sample should be selected to...Ch. 8.3 - The range for a set of data is estimated to be 36....Ch. 8.3 - Refer to the Scheer Industries example in Section...Ch. 8.3 - Prob. 26E Ch. 8.3 - Prob. 27E Ch. 8.3 - 28. Many medical professionals believe that eating...Ch. 8.3 - 29. Customers arrive at a movie theater at the...Ch. 8.3 - Prob. 30E Ch. 8.4 - A simple random sample of 400 individuals provides...Ch. 8.4 - A simple random sample of 800 elements generates a...Ch. 8.4 - In a survey, the planning value for the population...Ch. 8.4 - At 95% confidence, how large a sample should be...Ch. 8.4 - Prob. 35E Ch. 8.4 - According to statistics reported on CNBC, a...Ch. 8.4 - Prob. 37E Ch. 8.4 - 38. According to Franchise business review, over...Ch. 8.4 - In 16% of all homes with a stay-at-home parent,...Ch. 8.4 - Prob. 40E Ch. 8.4 - Prob. 41E Ch. 8.4 - 42. A poll for the presidential campaign sampled...Ch. 8.4 - Prob. 43E Ch. 8 - 44. A sample survey of 54 discount brokers showed...Ch. 8 - 45. A survey conducted by the American Automobile...Ch. 8 - 46. The 92 million Americans of age 50 and over...Ch. 8 - Prob. 47SE Ch. 8 - The Health Care Cost Institute tracks health care...Ch. 8 - Prob. 49SE Ch. 8 - Prob. 50SE Ch. 8 - 51. In developing patient appointment schedules, a...Ch. 8 - Prob. 52SE Ch. 8 - 53. The National Center for Education Statistics...Ch. 8 - A USA Today/CNN/Gallup survey of 369 working...Ch. 8 - Prob. 55SE Ch. 8 - Prob. 56SE Ch. 8 - The Centers for Disease Control reported the...Ch. 8 - A well-known bank credit card firm wishes to...Ch. 8 - Prob. 59SE Ch. 8 - 60. Although airline schedules and cost are...Ch. 8 - Young Professional Magazine Young Professional...Ch. 8 - Gulf Real Estate Properties Gulf Real Estate...Ch. 8 - Metropolitan Research, Inc. Metropolitan Research,...

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Find the 95% confidence interval for the population proportion of adults aged 18 to 29 user of internet.

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Find the 95% confidence interval for the population proportion of adults aged 18 to 29 user of internet.

Find the 99% confidence interval for the population proportion of adults aged 18 to 28 get married.

Find the larger margin of error in part (a) or (b).

Chapter 8 Solutions