Q4 TV advertising agencies face increasing challenges in reaching audience members because viewing TV programs via digital streaming is gaining in popularity. A poll reported that 58% of 2342 Americanadults 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 tothree decimal places.)Interpret 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 does not contain the true population proportion.O We are 99% confident that this interval contains 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 0.04 irrespective of the value of p? (Round your answer up to the nearest integer.)

The provided information is n=2342p^=0.58α=0.01The critical value is zc=2.58 (from statistical…

Answered: TV advertising agencies face increasing…

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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TV advertising agencies face increasing challenges in reaching audience members because viewing TV programs via digital streaming is gaining in popularity. The Harris poll reported on November 13, 2012, that 53% of 2343 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.b. What sample size would be required for the width of a 99% CI to be at most .05 irrespective of the value of p
A November 2018 CBS News Poll found that 35% of its sample planned to use online retailers for most holiday shopping. Give a 95% confidence interval for the proportion of all adults who plan to shop in this way, assuming that the result ˆp=0.35 comes from a sample size n= 650 n=1800 n=500 Explain briefly what your results show about the effect of increasing the size of a sample on the width of the confidence interval.
A research group studying cell phone habits asked the question “Do you ever use your cell phone to make a payment at a convenience store?” to people selected from two random samples of cell phone users. One sample consisted of older adults, ages 35 years and older, and the other sample consisted of younger adults, ages 18 years to 34 years. The proportion of people who answered yes in each sample was used to create a 95 percent confidence interval of (0.097,0.125)(0.097,0.125) to estimate the difference (younger minus older) between the population proportions of people who would answer yes to the question. Which of the following is the best description of what is meant by 95 percent confidence? In repeated random sampling with the same sample size, approximately 95% of the sample proportions from the younger group will be between 0.097 and 0.125 greater than the sample proportion from the older group. A In repeated random sampling with the same sample size,…
A philanthropic organization sent free mailing labels and greeting cards to a random sample of 100,000 potential donors on their mailing list and received 4900 donations.a) Given a 95% confidence interval for the true proportion of those from their entire mailing list who may donate?b) A staff member thinks that the true rate is 5.0%. Given the confidence interval you have found, do you find the rate plausible?
A recent study on the way that people talk indicated, with 95 percent confidence, that between 35 percent and 41percent of all adults find the word “whatever” to be the most annoying word in conversation.Based on the confidence interval, which of the following claims is supported?(A) Less than 25 percent of all adults find the word “whatever” to be the most annoying word in conversation.(B) More than 30 percent of all adults find the word “whatever” to be the most annoying word in conversation.(C) More than 45 percent of all adults find the word “whatever” to be the most annoying word in conversation.(D) More than half of all adults find the word “whatever” to be the most annoying word in conversation.(E) At least 95 percent of all adults find the word “whatever” to be the most annoying word in conversation.
The drug Viagra became available in the U.S. in May 1988, in the wake of an advertising campaign that was unprecedented in scope and intensity. A Gallup poll found that by the end of the first week of May, 643 out of 1,005 adults were aware that Viagra was an impotency medication. a) Is the sample size large enough to compute a confidence interval for the proportion of adults who were aware that Viagra was an impotency medication after the first week of May? Yes, because more than 10 adults were not aware of Viagra Yes, because the sample size is greater than 30 Yes, because more than 10 adults were aware of Viagra Yes, because both np̂ and n(1-p̂) are greater than 10 b)Using the information from questions 1-3, suppose that p̂ is 0.40 and the standard error of p̂ is 0.10. Compute a 90% confidence interval for the proportion of adults that were aware of Viagra. (0.2355, 0.5645) (0.3, 0.5) (0.2355, 0.4) (0.3, 0.4)
A Gallup poll of 1001 Americans age 18 and over conducted in May of 2013 found that 80% of the respondents "strongly agree" that K-12 schools should teach critical thinking to children with a margin of error of ±3.2%. The confidence interval for this statistic is from to .

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