More conditions Consider each situation described.Identify the population and the sample, explain whatp and pn represent, and tell whether the methods of thischapter can be used to create a confidence interval. a) A consumer group hoping to assess customer expe-riences with auto dealers surveys 167 people who recently bought new cars; 3% of them expresseddissatisfaction with the salesperson.b) What percent of college students have cell phones?2883 students were asked as they entered a footballstadium, and 243 said they had phones with them.c) 240 potato plants in a field in Maine are randomlychecked, and only 7 show signs of blight. How severeis the blight problem for the U.S. potato industry?d) 12 of the 309 employees of a small company sufferedan injury on the job last year. What can the companyexpect in future years?

Q: f n=450 and X = 360, construct a 99% confidence interval.

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Q: What set of factors would produce the narrowest confidence interval for estimating a poulation mean?…

A: Objective of this question is that, which option is the correct choice.

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Q: 3. needed to estimate the percentage of adults who can touch their nose with Find the sample size…

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Q: 4) A simple random sample is to be taken of 572 business majors in a college to estimate the…

A: When we don't have any prior information about population proportion, we generally take it as 0.50.…

Q: Practice. Testing a vaccine for HIV. Of 8198 subjects given a placebo, 74 became infected with HIV,…

A: (a)Given that,sample one, x1 =74, n1 =8198, p1= x1/n1=0.009sample two, x2 =51, n2 =8197, p2=…

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Q: We would like to know: "What percentage of college students drink alcohol every day?" In a random…

A: Given that, N=500 X=75

Q: If n = 180 and X = 144, construct a 90% confidence interval for the population proportion, p. Give…

A: Solution: From the given information, X=144, n=180 and the confidence level is 0.90. The sample…

Q: - Find the critical value that should be used in constructing the confidence r: Construct the 98%…

A: For students, sample size n1 = 235, sample mean = 6.94 and population SD = 3.55 For faculty, sample…

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A: Confidence interval for correlation coefficient is given by,

Q: If n=41n=41, ¯xx¯=36, and s=9s=9, find the margin of error for a 80% confidence level.

A: Answer - Given, Sample size n = 41,    x  = 36    and s = 9               80% confidence interval…

Q: To devise effective marketing strategies it is helpful to know the characteristics of your…

A: Givensample size(n)=932x=543p^ =xn=543932=0.5826Confidence level(c)=95%α=1-0.95=0.05α2=0.025critical…

Q: A public health official in Martin county needs to estimate the average diastolic blood pre…

A: Given: Sample size(n)=132Meanx¯=89Population standard deviationσ=10

Q: If n=18, ¯x=x¯=34, and ss=15, construct a confidence interval at a 98% confidence level. Assume the…

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Q: own residents were interviewed and it was found that 422 responded favorably to a question while 501…

A: given data, 422-favorably responded501-negetively responded 923- total  interviewed for positive…

Q: If n = 250 and X = 200, construct a 99% confidence interval for the population proportion, p. Give…

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Q: If n=590 and p=0.93, construct a 90% confidence interval.

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Q: How large is the sample if the confidence level is 97%, Ɛ = 2.5%  and ρ = .35?

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Q: 1. A professor is interested in how long the average biostat student studies per night, so he asked…

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Q: Please do Part D, E, F, G. The answers for part A,B,C are given to help. QUESTION: A national poll…

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Q: If Xbar=93​, σ=13​, and n=62​, construct a 99​% confidence interval estimate of the population​…

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Q: You measure 37 textbooks' weights, and find they have a mean weight of 73 ounces. Assume the…

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Q: In a survey of 2000 adults in a recent year, 713 made a New Year's resolution to eat healthier.…

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Q: In a survey of 2055 adults in a recent​ year, 722 made a New​ Year's resolution to eat healthier.…

A: Givenx=722n=2055p^=xn=7222055=0.351

Q: womence level. Use E=1%. 2) In a survey of 700 random households in a particular city in NCR, adults…

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Q: Construct a 90​% confidence interval of the population proportion using the given information.…

A: x=240  n=300  p= 240/300 = 0.8 q = 1-p = 1-0.8 = 0.2

Q: In a survey of 2445 adults in a recent​ year, 1491 say they have made a New​ Year's resolution.…

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Q: If n=550 and X = 440, construct a 90% confidence interval. Give your answers to three decimals <p<

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Q: According to a telephone survey of adults, 86% of homeowners said that owning a home was a good…

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Q: Use the sample data and confidence level given below to complete parts (a) through (d). In a study…

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Q: The width of a confidence interval is a measure of its precision. The narrower the confidence…

A: The 100(1-α)% confidence interval of single population is given by, C.I =x - σnzα/2 ,x + σnzα/2…

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Q: If X̅ = 65, ? = 20 ??? ? = 36, construct a 95% confidence interval estimate for the population mean,…

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.