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d) If you hadn't already taken the sample listed above, what sample size would be required so that the width of the 99% confidence interval would be at most 0.02 units wide? Be as conservative as possible with your answer!

d) If you hadn't already taken the sample listed above, what sample size would be required so that the width of the 99% confidence interval would be at most 0.02 units wide? Be as conservative as possible with your answer!

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 1GP
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Please find d. The answer for it is not 2173

A web based software company is interested in estimating the proportion of individuals who use the Firefox browser. In a sample of 200 of individuals, 31 users stated that they used Firefox. Using this data, construct a 99% confidence interval for the proportion of all individuals that use Firefox. a) What is the lower limit on the 99% confidence interval? Give your answer to three decimal places. |0.089 b) What is the upper limit on the 99% confidence interval? Give your answer to three decimal places. [0.221 c) Google states that the proportion of all individuals that use Firefox is 0.2. Based on the interval above, does the Google claim seem reasonable? Yes because 0.2 is inside the interval. No because 0.2 is inside the interval. Yes because 0.2 is not inside the interval. No because 0.2 is not inside the interval. d) If you hadn't already taken the sample listed above, what sample size would be required so that the width of the 99% confidence interval would be at most 0.02 units wide? Be as conservative as possible with your answer! X
Transcribed Image Text:A web based software company is interested in estimating the proportion of individuals who use the Firefox browser. In a sample of 200 of individuals, 31 users stated that they used Firefox. Using this data, construct a 99% confidence interval for the proportion of all individuals that use Firefox. a) What is the lower limit on the 99% confidence interval? Give your answer to three decimal places. |0.089 b) What is the upper limit on the 99% confidence interval? Give your answer to three decimal places. [0.221 c) Google states that the proportion of all individuals that use Firefox is 0.2. Based on the interval above, does the Google claim seem reasonable? Yes because 0.2 is inside the interval. No because 0.2 is inside the interval. Yes because 0.2 is not inside the interval. No because 0.2 is not inside the interval. d) If you hadn't already taken the sample listed above, what sample size would be required so that the width of the 99% confidence interval would be at most 0.02 units wide? Be as conservative as possible with your answer! X
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