Your state is considering raising the legal age for consumption of alcoholic beverages to 21 years old. How large a sample size must be taken to make an estimate of the true proportion of citizens who favor this move? The error should be no more than 0.01 with 99% confidence.   Select one:

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: If we want to provide a 95% confidence interval for the mean of a population when the population…

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Q: For a population data set, σ = 13.3 . How large a sample should be selected so that the margin of…

A: From the given information, confidence level  Level of significance  Margin of error E = 2.50.…

Q: A researcher wishes to estimate the percentage of adults who support abolishing the penny. What size…

A: Margin of Error(E)=0.05For 99% confidence level Zα2=2.576 Formula; E=Zα2×(p×(1-p)n)

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: Suppose that you wish to find a population proportion p with accuracy ±2% with 99% confidence. What…

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Q: We want to estimate a population proportion with a 95% confidence interval and we want the margin of…

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Q: In a survey of 3700 TV viewers, 834 said they watch network news programs. Find the margin of error…

A: Solution

Q: A work sampling study requires an acceptable error level of 10 percent and z = 2 for 95.45 percent…

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Q: Dylan wants to determine a 95% confidence interval for the true proportion of high school students…

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Q: find the margin of error for a sample mean, given n=16, s=4, Xbar=17. for a 95% confidence interval.

A: The margin of error for sample mean is given by,

Q: For a population data set, o = 13.40. a. What should the sample size be for a 98% confidence…

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Q: If Xbar=81​,S=20​,and n=36​,and assuming that the population is normally​ distributed, construct a…

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Q: Determine the margin of error for a confidence interval to estimate the population mean with n = 21…

A: n = 21  s​ = 12.6 confidence interval = 80%.

Q: Find the standard error to estimate the population mean for each of the following. a. n = 17; 95%…

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Q: If X = 66, S = 16, and n = 64, and assuming that the population is normally distributed, construct a…

A: Given data: Sample mean = 66 Sample standard deviation = 16 Sample size = 64 Confidence level  = 95%…

Q: A 95% confidence intervel for the proportion of U.S. adults enjoying work from home is…

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Q: (c) How large would the sample need to be so that a 95% confidence interval would have a margin of…

A: Given that sample mean xbar=12.05 and population standard deviation=6.55 3) find sample size of…

Q: The next 10 questions refer to the following scenario: According the World Health Organization, the…

A: We have given the following Population mean   (  μ  ) = 15 Sample mean =14.57 Sample standard…

Q: Use the information below to answer Questions #23 and # 24. A researcher wishes to estimate, with…

A: Given that, A researcher wants to estimate with 95% confidence E = 4% = 0.04

Q: A researcher wishes to estimate the percentage of adults who support abolishing the penny. What size…

A: GivenMargin of error(E)=0.03confidence level(c)=99%α=1-0.99=0.01α2=0.05zα2=z0.05=1.6449   (from…

Q: Given the population size with a corresponding margin of error, determine the sample size of each of…

A: Solution-: Given: N=3050,e=0.01 (or 1%) We determine the sample sample size (n)=?

Q: me that a sample is used to estimate a population proportion p. e given statistics and confidence…

A: The value of z at 98% confidence level is 2.33, which can be found by using the standard normal…

Q: A researcher wishes to estimate the percentage of adults who support abolishing the penny . What…

A: A) Sample size obtained when he uses a previous estimate of 32%. As given he wishes the estimate to…

Q: If X=99​, S=7​, and n=64​, and assuming that the population is normally​ distributed, construct a…

A:

Q: Given a sample of size n = 15 with x=12.5,s=2.9. Estimate the population mean with 95% of confidence…

A: Given problem Given that   n = 15 x-bar = 12.5 s = 2.9

Q: A doctor wants to estimate the mean HDL cholesterol of all​ 20- to​ 29-year-old females. How many…

A: Given: Margin of error (E) = 2 Confidence level = 0.99 Therefore, α=1-0.99=0.01 Standard deviation…

Q: Beth wants to determine a 99 percent confidence interval for the true proportion p of high school…

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Q: The claim is that for a smartphone​ carrier's data speeds at​ airports, the mean is μ=18.00 Mbps.…

A: Given information Hypothesized mean µ = 18.00 Mbps Sample size (n) = 24 The value of test…

Q: The claim is that for a smartphone​ carrier's data speeds at​ airports, the mean is m=12.00 Mbps.…

A:

Q: Assume that a sample is being used to estimate a population mean μμ. If n = 29, x¯ = 46, and s =…

A: From the provided information, Sample size (n) = 29 Sample mean (x̅) = 46 Sample standard deviation…

Q: Solve for the following problems involving the number of sample size: 1. Find the sample size, n to…

A: 1.

Q: A physical therapist wants to determine the difference in the proportion of men and women who…

A: It is given that there is 95% confidence.

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 manufacturer of potato chips would like to know whether its bag filling mac underfilling the bags.…

A: we are given that  mean = 414gms variance = 169 n = 50  we need to test if the machine is…

Q: For a population data set, o = 11.60. a. What should the sample size be for a 98% confidence…

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Q: NASA is interested in the true proportion of children who are interested in becoming astronauts. At…

A: Disclaimer: Since you have asked multiple questions, we will solve the first question for you. If…

Q: A researcher calculates a 90% confidence interval of (0.24,0.4) for a proportion. What was the…

A: We have given 90% confidence interval for proportion then we have to find the sample size for the…

Q: 1. Given: n=130, a = 25, level of confidence is 90%. What is the margin of error of the given data?

A: The sample size is given as 130, n=130 The standard deviation is given as 25, σ=25 The Confidence…

Q: Beth wants to determine a 90 percent confidence interval for the true proportion p of high school…

A: The required margin of error (E) is less than 0.04. The sample proportion p^ is 0.50 (because…

Q: in a poll 51% of people polled answered yes to the question Are you in favor of the death penalty…

A: Given, p=0.51 M.E=0.02 α=1-0.94=0.06 As per z-distribution table, the critical value of z at 0.06…

Q: Before working with percentages in confidence intervals and hypothesis tests for p, change them to…

A: Confidence or testing formula always given in proportion form.

Q: A researcher wishes to estimate the percentage of adults who support abolishing the penny What size…

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Q: Step 1 Recall that for a 95% confidence level, the formula for the sample size n required to…

A: The true value of the population proportion p is unknown. To use the formula for sample size, we…

Q: In a​ poll, 37​% of the people polled answered yes to the question​ "Are you in favor of the death…

A: Given information- Margin of error, E = 5% = 0.05 Confidence level, c = 96% We have given that 37​%…

Q: A researcher wishes to estimate the percentage of adults who support abolishing the penny . What…

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Q: If a 95% Confidence for the Population Proportion is (0.56, 0.78), fınd its Margin of Error.

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Q: A researcher wishes to estimate the percentage of adults who support abolishing the penny. What size…

A: a) Given that: p= previous estimate = 32% =0.32 e= error= 3%=0.03 z=critical value for confidence…

Q: -One Sample Dichotomous Outcome- Suppose a similar study was conducted two years ago and found that…

A: Giventhe prevalance of smoking among freshman = 27% = 0.27We assume to use 95% confidence interval…

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.