Assume that a sample is used to estimate a population proportion p. Find the 95% confidence interval for a sample of size 324 with 33% successes. Enter your answer as a tri-linear inequality using decimals (not percents) accurate to two decimal places.

Q: A federal report indicated that 22% of children ages 2 to 5 years had a good diet, an increase over…

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Q: Construct the 99% confidence interval estimate of the population proportion p if the sample size is…

A: Obtain the 99% confidence interval estimate of the population proportion. The 99% confidence…

Q: A past survey of 1,068,000 students taking a standardized test revealed that 9.9% of the students…

A: Givenn1=1068000p^1=9.9%=0.099n2=1476000p^2=9.2%=0.092Confidence interval = 95%

Q: In order to construct the 95% confidence interval, you choose which formu x ±1.96 × n x + 1.984 × x…

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Q: Use a t table to find the value of t to use in a confidence interval?

A: Note: you did not mention the information about the sample, for which t-value is to be obtained. So,…

Q: If X = 114, α= 20, and n = 33, construct a 99% confidence interval estimate for the population mean,…

A: Given data:  Sample Mean = 114 Population standard deviation = 20 Sample size = 33 Confidence level…

Q: 2. A nutritionist wants to know the population proportion of Grade 1 learners who eat vegetables.…

A: We have given thatn = 1200x = 200p̂ = x/n = 200/1200 = 0.167Significance level (α) = 1 - 0.95 = 0.05

Q: If n=180 and ˆpp^ (p-hat) = 0.5, construct a 99% Confidence Interval. In order to use technology,…

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Q: Leigh and Rebekah are each attempting to estimate the proportion of coffee drinkers who consume more…

A: Given that Leigh and Rebekah construct the confidence interval for coffee drinkers who drink more…

Q: The figure to the right shows the results of a survey in which 1015 adults from Country​ A, 1018…

A: The 99% confidence interval for population proportion is For 99% confidence, zc = 2.58

Q: Express the confidence interval 85.9%±5.8%85.9%±5.8%in the form of a trilinear inequality. %…

A: Given confidence interval is,

Q: The result of an English test was collected, and the grades and gender are summarized below A…

A: For the given data 98% confidence interval to estimate p p represent the proportion of all female…

Q: The result of an accounting test was collected, and the grades and gender are summarized below…

A: Obtain the 85% confidence interval for the population proportion of all female students who would…

Q: Find the 98% confidence interval for the cigarette tax in all 50 states.

A: Here use given sample data  And here population size is Finite N= 50

Q: Construct a 90% confidence interval, using the inequality d-te <d+tc To test the effectiveness of a…

A: The difference is, Sleep without the drug Sleep using the drug Difference(d) 4.4 5.5 -1.1 4.1…

Q: Construct a 95​% confidence interval of the population proportion using the given information.…

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Q: Suppose that you will be taking a random sample from a population and that you intend to find a 95%…

A: Solution: The confidence interval for the population mean is calculated by using the following…

Q: The figure to the right shows the results of a survey in which 1001 adults from Country​ A, 1014…

A: For country A: It is given that sample size (n) is 1001 and the sample proportion is 0.34.

Q: If n=160 and ˆp (p-hat) =0.48, find the margin of error at a 99% confidence level

A: Given Data: p^=0.48n=160   We know that, p^-pp^(1-p^)n~ Normal(0,1)

Q: Find the 68% confidence interval for the percentage of leaky diapers with a sample of 100 diapers…

A: Let X be the number of defective diapers and n is the number of diapers. From the given information,…

Q: confidence interval for the mean of five measurements is smaller than for a single result.

A: Here we use confidence interval formula for explanations as given in step 2

Q: If n=14, ¯xx¯(x-bar)=44, and s=3, find the margin of error at a 98% confidence level Give your…

A: Margin of error = The margin of error (MOE) expresses to the maximum expected differences between…

Q: A _________confidence interval would result from increase the sample size. (A) narrower (B) wider…

A: Solution: The confidence interval can be calculated by using the following formula:

Q: If n=360 and p (p-hat) = 0.2, construct a 98% Confidence Interval. In order to use technology, you…

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Q: Suppose that a 95% confidence interval for a population p = the population proportion of men who…

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Q: A quality controller wants to estimate the proportion of high quaity goods out of a batch of…

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Q: If n=330 and p (p-hat) = 0.8, construct a 90% Confidence Interval. In order to use technology, you…

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Q: Suppose that you have obtained data by taking a random sample from a population and that you intend…

A: 95% percent confidence interval will give more accurate estimate of µ than 99% confidence interval.…

Q: If n=200 and ˆpp^ (p-hat) =0.39, find the margin of error at a 99% confidence level

A: Find z-critical value:…

Q: If n=570 and ˆpp^ (p-hat) =0.8, find the margin of error at a 95% confidence level

A: given that, n = 570 p^=0.8 confidence level = 95%

Q: If n=270 and ˆpp^ (p-hat) =0.59, find the margin of error at a 99% confidence level Give your…

A: Given  n=270, pcap=0.59, alpha=0.01 Zcritical=2.578 at alpha=0.01 We want to find margin of error

Q: Assume that a sample is being used to estimate a population mean μμ. If n = 19, x¯ = 43, and s = 3,…

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Q: A researcher computed a 90% confidence interval for the proportion of students who smoke. If the…

A: False. Relationship between confidence level and error:The error value increases when the confidence…

Q: In a survey conducted by CNN, 130 of the 250 people that were randomly surveyed have a savings…

A: Given data, n=250 x=130 Sample proportion p=x/n =130/250=0.52 z-value at 90% confidence is Zc=1.645

Q: If a 90%, a 95% and a 99% confidence interval are foung for a population mean, describe how the 3…

A: Population mean CI for known population standard deviation is, CI=x¯±Zσnwhere,σ=population standard…

Q: A pollster wants to conduct a pre-election poll with a margin of error of 2.5% and a 95% confidence…

A: We have given that,  Margin of error (E) = 2.5% = 0.025 and confidence level = 95%  Then, We will…

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

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Q: 6.The boundaries of a confidence interval are called:

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Q: A past survey of 1,068,000 students taking a standardized test revealed that 9.6% of the students…

A: Given : n1 = 1068000 p̂1 = 0.096 n2 = 1476000 p̂2 = 0.092

Q: on Tukey Multiple-Comparison Method, confidence interval for 4-4 is: a) (一)#4a。 b) c) d) Answer

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Q: If X=68​, σ=14​, and n=66​, construct a 95​% confidence interval estimate of the population​ mean, μ

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Q: a. When calculating a confidence interval, the area of one tail is 2 O True False

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Q: For the same sample statistics, which level of confidence would produce the widest confidence…

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Q: Identify the at-score for a 99% confidence interval if the sample size is 70.

A: givensample size(n)=70α=1-0.99=0.01

Q: If n=570 and ^p(p-hat) =0.5, construct a 99 percent confidence interval. In order to use technology,…

A: Here it is given that ,  Sample size , n = 570. Sample proportion (p⏞) =0.5  , Confidence level  =…

Q: (b) A sample of 1200 network engineer job applications included 720 are from expatriates. Find  the…

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Q: If n=420 and ˆpp^ (p-hat) =0.19, find the margin of error at a 95% confidence level

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Q: A statistics student wants to conduct a study to determine the proportion of workers in Cititon who…

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Q: If n=350 and p (p-hat) =0.28, find the margin of error at a 99% confidence level Give your answer to…

A: n = 350p^ = 0.2899% confidence level

Q: If n=360 and ˆp(p-hat) =0.69, find the margin of error at a 95% confidence level

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