The brand manager for a brand of toothpaste must plan a campaign designed to increase brand recognition. He wants to first determine the percentage of adults who have heard of the brand. How many adults must he survey in order to be 90​% confident that his estimate is within five percentage points of the true population​ percentage? Complete parts​ (a) through​ (c) below. ​a) Assume that nothing is known about the percentage of adults who have heard of the brand. n=enter your response here ​(Round up to the nearest​ integer.)   b) Assume that a recent survey suggests that about 85​% of adults have heard of the brand. n=enter your response here ​(Round up to the nearest​ integer.)

Q: Use the expression in the accompanying discussion of sample size to find the size of each sample if…

A: From the provided information, Margin of error (E) = 0.06 Confidence level = 95% The Z value at 95%…

Q: A statistics professor made the following histogram for the scores on her class’s first exam.   If…

A: From the Histogram, the scores and the corresponding frequencies are, Given that the passing score…

Q: Use the expression in the accompanying discussion of sample size to find the size of each sample if…

A: Given Assuming sample proportion, p^1=p^2=0.5 as there is no prior estimate. Margin of error, E=0.06…

Q: The U.S. Department of Transportation, National Highway Traffic Safety Administration, reported that…

A:

Q: The brand manager for a brand of toothpaste must plan a campaign designed to increase brand…

A: (c) Option A: No, a sample of students at the nearest college is a convenience sample, not a simple…

Q: Use the expression in the accompanying discussion of sample size to find the size of each sample if…

A: Find z-critical value:…

Q: The brand manager for a brand of toothpaste must plan a campaign designed to increase brand…

A: Step 1: Step 2:

Q: Twenty years ago, 57% of parents of children in high school felt it was a serious problem that high…

A: n = 900 x = 363 P0 = 0.57

Q: You may need to use the appropriate appendix table or technology to answer this question. A consumer…

A: The sample size for supermarket 1 is 280, sample mean is 83 and sample size for supermarket 2 is 300…

Q: The brand manager for a brand of toothpaste must plan a campaign designed to increase brand…

A: The formula for the sample size is as follows: Here,zα/2 is the critical value at 95% confidence…

Q: A programmer plans to develop a new software system. In planning for the operating system that he…

A: From the provided information, Confidence level = 99% Margin of error (E) = 5% that is 0.05 Assuming…

Q: The brand manager for a brand of toothpaste must plan a campaign designed to increase brand…

A: Step 1:We use the formula for the margin of error for the population proportion p to derive the…

Q: The brand manager for a brand of toothpaste must plan a campaign designed to increase brand…

A: Given information- Margin of error, E = 7% = 0.07 Confidence level, c = 80% Since nothing is known…

Q: To help with budgeting her expenses, Miranda decides to switch to the "Average Billing" plan, which…

A: Let us find the average of given amounts (bills).

Q: The brand manager for a brand of toothpaste must plan a campaign designed to increase brand…

A: Given, Confidence level, C = 95% = 0.95So, level of significance, α = 1-0.95 = 0.05Margin of error,…

Q: A newspaper reported on the topics that teenagers most want to discuss with their parents. The…

A: From the provided information, Sample size (n) = 508 37% would like to talk about school so the…

Q: Jennifer wants to estimate the percentage of parents that use cloth diapers. She asks a randomly…

A: Solution: It is given that Jennifer wants to estimate the percentage of parents that use cloth…

Q: Use the expression in the accompanying discussion of sample size to find the size of each sample if…

A: Computing the sample size: The confidence level is 90%. Therefore, α = 0.10 and α/2=0.05. The margin…

Q: The data in the accompanying table represent the heights and weights of a random sample of…

A: The data table provided in the question is as follows : Height Weight 75 227 75 195 72 180…

Q: Movie companies need to predict the gross receipts of individual movies after a movie has debuted.…

A: Use EXCEL to obtain the value covariance between First weekend gross and national gross.   EXCEL…

Q: Calcium is essential to tree growth because it promotes the formation of wood and maintains cell…

A: c) Decision Rule: If the confidence interval contains the true population mean value, then do not…

Q: The scatterplot illustrates the relationship between distance and success rate of field-goal…

A: Given,

Q: the expression in the accompanying discussion of sample size to find the size of each sample if you…

A:

Q: Use the expression in the accompanying discussion of sample size to find the size of each sample if…

A: Given: The level of confidence is 90%. Let M.E represents the margin of error. The margin of error…

Q: Use the expression in the accompanying discussion of sample size to find the size of each sample if…

A:

Q: https://ezto.mheducation.com/ext/map/index.html?_con%-con&external_browser-08launchUrl-https% xam…

A: Given data:

Q: The brand manager for a brand of toothpaste must plan a campaign designed to increase brand…

A:

Q: a. Assume that nothing is known about the percentage of passengers who prefer aisle seats. n = 1356…

A: a)  Given that the margin of error is 0.035. Confidence level is 99%. And Significance level is 1%…

Q: The results for a blood test for a certain disease are shown in the table below. Based on the table,…

A: Solution: From given tabele A=290 B=10 C=3219 D=481

Q: Use the expression in the accompanying discussion of sample size to find the size of each sample if…

A:

Q: Raymond wants to estimate the percentage of parents that use cloth diapers. He asks a randomly…

A: According to the provided information, Raymond wants to estimate the percentage of parents that use…