A sample size must be determined for estimating a population mean given that the confidence level is 99​% and the desired margin of error is 0.24. The largest value in the population18 is thought to be and the smallest value is thought to be 6 .

Q: Find the sample size needed if a 98% confidence interval has a 'margin of error' of 4% if .. a) You…

A: From the provided information, Margin of error (E) = 0.04 Confidence level = 98% The z value at 98%…

Q: Given that the population standard deviation is 5.6, determine the minimum sample size needed in…

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Q: Find the sample size necessary for an 80% confidence level with a maximal margin of error E = 0.10…

A: We have given that the average x-bar 3.15, population standard deviation 0.24 and margin of error is…

Q: A researcher wishes to estimate the proportion of adults who have high-speed Internet access. What…

A: It is given that margin of error (E) is 0.04 and the confidence level is 99%.

Q: Given that the population standard deviation is σ = 1, determine the minimum sample size needed in…

A: Solution Refer Standard normal table/Z-table OR use excel function…

Q: Use the given data to find the minimum sample size required to estimate the population proportion.…

A: The required sample size is calculated by using the formula:

Q: A researcher wishes to estimate the proportion of adults who have high-speed Internet access. What…

A:

Q: A researcher wishes to estimate the proportion of adults who have​ high-speed Internet access. What…

A: (a) Given that, Critical values: Using the z-table, the critical value at 95% confidence level is…

Q: Find the Confidence interval for the true Population Mean if a sample of 50 has a mean of 26.8 and a…

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Q: Suppose you want to construct a confidence interval with a margin of error of 0.03 (3%). Find the…

A: The formula for calculating sample size is, n = z2*p^(1-p^)MOE2 Where, z is the z score (default…

Q: Suppose a 90% confidence interval for the population mean () is given by (138.7, 150.5). Find the…

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Q: Find the minimum sample size you should use to assure that your estimate of p will be within a…

A: We have to find sample size required.

Q: What sample size do they need to use if they want to estimate the proportion of branches with ATM’s…

A: The provided information are: Confidence level = 95% = 0.95 So, significance level (alpha) = 1-0.95…

Q: A quality control inspector makes it clear that in order for an item to be acceptable, the…

A: Given: Margin of error (E): E=0.0712 Population variance: σ2=8.85 Confidence level (c) =0.99α=1-c…

Q: It is desired to obtain a confidence interval for a proportion p of businesses that plan to hire new…

A: Solution: Given information: p = 0.5 Population proportion E= 0.03 Margin of error α=0.10 Level of…

Q: A researcher wishes to estimate the proportion of adults who have​ high-speed Internet access. What…

A: The random variable is adults who have​ high-speed Internet access. It follows standard normal…

Q: Find the sample size necessary for an 80% confidence level with a maximal margin of error E= 0.07…

A: Given that s.d =0.34,alpha =0.2,E =0.07 ( e) n= ?

Q: Given that the sample proportion of Americans who are dissatisfied with the quality of education is…

A: Given information: p=0.53 M.E=0.05Confidence level=95% Use the excel formula, "=NORM.S.INV(0.975)"…

Q: Find the smallest sample size needed to estimate the population proportion for a margin of error of…

A:

Q: We want to estimate, with a maximum error of .02, the true proportion of all senior medical students…

A: compute sample size ( n ) = n=(Z/E)^2*p*(1-p)

Q: The 95% confidence interval for the conditional mean of y given x=x* is: A. Narrower than the 95%…

A: Confidence interval for the conditional mean of y given x=x*  Uncertainty of y⏞ as an estimate of Y…

Q: For the confidence interval (24,44), the point estimate is and the margin of error is

A:

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

A:

Q: The estimated prevalence is 25% and the desired confidence level is 95% with a margin of error of 8%…

A:

Q: For a confidence level of 96%, find the critical value for a confidence interval on a one sample…

A: It is given that the confidence level is 0.96.

Q: The sample size needed to estimate a population mean within 2 units with a 95% confidence when the…

A: Given,σ=8E=2Zc at 95% confidence is Zc=1.96n=?

Q: If n=400 and X=100​, construct a 99​% confidence interval estimate for the population proportion

A: According to the given information, we have n = 400 X = 100 Confidence level = 99%

Q: For a confidence level of 94%, find the critical value for a confidence interval on a one sample…

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Q: A researcher wishes to estimate the proportion of adults who have high-speed Internet access. What…

A:

Q: The estimated prevalence is 19% and the desired confidence is 93% with a margin of error of 4%.…

A: Given,margin of error(E)=0.04sample proportion(p^)=0.19α=1-0.93=0.07α2=0.035Z0.035=1.8119…

Q: Find the sample size needed to estimate the percentage of adults who can wiggle their ears. Use a…

A:

Q: If n=400 and X=120​, construct a 90​% confidence interval estimate for the population proportion.…

A: Solution: Given information: n= 400 Sample size  X= 120 Success p^=Xn=120400=0.30 Sample proportion…

Q: If 330, 610] is a confidence interval for the population mean. Find the value of the point estimator…

A: The confidence interval for population mean is given by (330, 610) Let M be the sample mean and E be…

Q: The estimated prevalence is 25% and the desired confidence level is 95% with a margin of error of 4%…

A: The estimated prevalence =25% E= 4% CI =95% CI= 0.95 p= 0.25 E= 0.04

Q: What is the minimum required sample size to make a 96% confidence interval for a population mean if…

A: Margin of error=E=2 Standard deviation=σ=12 96% confidence interval  E=Zc×σ/√n n=sample size

Q: It is desired to estimate the proportion of cannabis users at a university. What is the sample size…

A: Here, CL=0.95 and E=0.10.

Q: For a confidence level of 98%, find the critical value for a confidence interval on a one sample…

A:

Q: If the sample size is large, the confidence interval estimate for the difference between two…

A: True

Q: What sample size is needed to give a margin of error within ±3%±3% in estimating a population…

A: We have given that,  Population proportion (p) = 0.4, margin of error (E) = ±3% = 0.03 and…

Q: A researcher wishes to estimate the proportion of adults who have​ high-speed Internet access. What…

A: Given information:Margin of error (E) = 0.04Confidence level=90%…

Q: The estimated prevalence is 25% and the desired confidence is 95% with a margin of error of 4%.…

A:

Q: Assume that a sample is used to estimate a population proportion p. Find the margin of error M.E.…

A: Given data,n=323p=50.2%=0.502z value at 95 % confidence is Zc=1.96Margin of error(ME)=?

Q: For the specified margin of error and confidence​ level, obtain a sample size that will ensure a…

A: As nothing about proportion is given So, p = 0.5

Q: For the specified margin of error and confidence​ level, obtain a sample size that will ensure a…

A: From the provided information, Margin of error (E) = 0.05 Confidence level = 95%

Q: Solve for the sample size with the assumption that the confidence coefficient is 95% and second, the…

A: Sample size estimation is integral part of inferential statistic.

Q: A researcher wishes to estimate the proportion of adults who have high-speed Internet access. What…

A:

Q: Assume that all​ grade-point averages are to be standardized on a scale between 0 and 6. How many​…

A:

Q: Given that the population standard deviation is 1, determine the minimum sample size needed in order…

A: Given : population standard deviation = σ = 1 margin of error = E = 0.2 level of confidence = 95% At…

Q: If n=400 and X=80​, construct a 90​% confidence interval estimate for the population proportion.…

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