TV advertising agencies face increasing challenges in reaching audience members because viewing TV programs via digital streaminggaining in popularity. A poll reported that 54% of 2345 American adults surveyed said they have watched digitally streamed TV programming on some type of device.(a) Calculate and interpret a confidence interval at the 99% confidence level for the proportion of all adult Americans who watched streamed programming up to that point in time. (Round your answers to three decimal places.)0.5130.567Interpret the resulting interval.O we are 99% confident that the true population proportion lies below this interval.O we are 99% confident that this interval contains the true population proportion.O we are 99% confident that this interval does not contain the true population proportion.O we are 99% confident that the true population proportion lies above this interval.(b) What sample size would be required for the width of a 99% CI to be at most 0.03 irrespective of the value of p? (Round your answer up to the nearest integer.)461

The confidence level is 99% Therefore, α = 0.01 and α/2=0.005. The margin of error is 0.03. Since…

Answered: (b) What sample size would be required…

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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For this problem, carry at least four digits after the decimal in your calculations. Answers may vary slightly due to rounding.The National Council of Small Businesses is interested in the proportion of small businesses that declared Chapter 11 bankruptcy last year. Since there are so many small businesses, the National Council intends to estimate the proportion from a random sample. Let p be the proportion of small businesses that declared Chapter 11 bankruptcy last year.
Claim: A Frosted Fruits cereal box contains less than 16 ounces of cereal. A random sample of 12 revealed a mean of 15.2 ounces and a sample standard deviation of 2.08. Use the traditional method at a 5% significance level to test the daim. Critical Value = [three decimal accuracy] Test Statistic = [three decimal accuracy] Conclusion O Fail to Reject Ho O Reject Ho
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Answer A B C and please follow the instructions
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For this problem, carry at least four digits after the decimal in your calculations. Answers may vary slightly due to rounding. Small Businesses is interested in the proportion of small businesses that declared Chapter 11 bankruptcy last year. Since there are so many small businesses, the National Council intends to estimate the proportion The National Council from a random sample. Let p be the proportion of small businesses that declared Chapter 11 bankruptcy last year. (a) If no preliminary sample is taken to estimate p, how large a sample is necessary to be 99% sure that a point estimate p will be within a distance of 0.09 from p? (Round your answer up to the nearest whole number.) small businesses (b) In a preliminary random sample of 30 small businesses, it was found that twelve had declared Chapter 11 bankruptcy. How many more small businesses should be included in the sample to be 99% sure that a point estimate p will be within a distance of 0.090 from p? (Round your answer up…
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(b) What sample size would be required for the width of a 99% CI to be at most 0.03 irrespective of the value of p? (Round your answer up to the nearest integer.) 401