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A poll asked a group of people if the fact that they can make copies of songs on the Internet for free made them more likely-or less likely-to buy a performer's CD. Only 17% responded that it made them "less ikely." The poll was based on a random sample of 696 Intermet users a) Check that the assumptions and conditions are met for inference on proportions. b) Find the 95% confidence interval for the true proportion of all Internet users who are "less ikely to buy CDs. a) Check the assumptions and conditions. Choose the correct answer below. OA This was a random sample of less than 10% of all Internet users; there are less than 10 successes, so the sample is not large enough. OB. This was a random sample of more than 10% of all Internet users; the sample is too large. OC. The independence assumption is violated; whether one person is "less likely" to buy a performer's CD is dependent on whether another person is "less likely to buy a performer's CD. D. This was a random sample of less than 10% of all Internet users; there were at least 10 successes and 10 failures, so the sample is large enough. b) Select the correct choice below and fil in any answer boxes within your choice. OA. The 95% corifidence interval is D. (Round to three decimal places as needed.) O B. The conditions of a confidence interval are not satisfied.

A poll asked a group of people if the fact that they can make copies of songs on the Internet for free made them more likely-or less likely-to buy a performer's CD. Only 17% responded that it made them "less ikely." The poll was based on a random sample of 696 Intermet users a) Check that the assumptions and conditions are met for inference on proportions. b) Find the 95% confidence interval for the true proportion of all Internet users who are "less ikely to buy CDs. a) Check the assumptions and conditions. Choose the correct answer below. OA This was a random sample of less than 10% of all Internet users; there are less than 10 successes, so the sample is not large enough. OB. This was a random sample of more than 10% of all Internet users; the sample is too large. OC. The independence assumption is violated; whether one person is "less likely" to buy a performer's CD is dependent on whether another person is "less likely to buy a performer's CD. D. This was a random sample of less than 10% of all Internet users; there were at least 10 successes and 10 failures, so the sample is large enough. b) Select the correct choice below and fil in any answer boxes within your choice. OA. The 95% corifidence interval is D. (Round to three decimal places as needed.) O B. The conditions of a confidence interval are not satisfied.

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Question Help Y A poll asked a group of people if the fact that they can make copies of songs on the Internet for free made them more likely-or less likely-to buy a performer's CD. Only 17% responded that it made them "less likely." The poll was based on a random sample of 696 Internet users. a) Check that the assumptions and conditions are met for inference on proportions. b) Find the 95% confidence interval for the true proportion of all Internet users who are "less likely to buy CDs. a) Check the assumptions and conditions. Choose the correct answer below. OA This was a random sample of less than 10% of all Internet users; there are less than 10 successes, so the sample is not large enough. OB. This was a random sample of more than 10% of all Internet users; the sample is too large. O C. The independence assumption is violated; whether one person is "less likely" to buy a performer's CD is dependent on whether another person is "less likely" to buy a performer's CD. YD. This was a random sample of less than 10% of all Internet users; there were at least 10 successes and 10 failures, so the sample is large enough. b) Select the correct choice below and fill in any answer boxes within your choice. O A. The 95% confidence interval is ( D (Round to three decimal places as needed.) O B. The conditions of a confidence interval are not satisfied. 9.08 Click to select and enter your answer(s) and then click Check Answer. Check Answer Clear All All parts showing 14 888 * & % 2$ 4 9 %23 5 3
Transcribed Image Text:Question Help Y A poll asked a group of people if the fact that they can make copies of songs on the Internet for free made them more likely-or less likely-to buy a performer's CD. Only 17% responded that it made them "less likely." The poll was based on a random sample of 696 Internet users. a) Check that the assumptions and conditions are met for inference on proportions. b) Find the 95% confidence interval for the true proportion of all Internet users who are "less likely to buy CDs. a) Check the assumptions and conditions. Choose the correct answer below. OA This was a random sample of less than 10% of all Internet users; there are less than 10 successes, so the sample is not large enough. OB. This was a random sample of more than 10% of all Internet users; the sample is too large. O C. The independence assumption is violated; whether one person is "less likely" to buy a performer's CD is dependent on whether another person is "less likely" to buy a performer's CD. YD. This was a random sample of less than 10% of all Internet users; there were at least 10 successes and 10 failures, so the sample is large enough. b) Select the correct choice below and fill in any answer boxes within your choice. O A. The 95% confidence interval is ( D (Round to three decimal places as needed.) O B. The conditions of a confidence interval are not satisfied. 9.08 Click to select and enter your answer(s) and then click Check Answer. Check Answer Clear All All parts showing 14 888 * & % 2$ 4 9 %23 5 3
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