When estimating the population proportion, how large a sample is needed to be 95% confident that the error will not exceed 0.05?

Q: You want to obtain a sample to estimate a population mean. based on previous evidence, you believe…

A: Answer: From the given data, Margin of error (ME) = 1.6 Standard deviation(σ) = 19.7 95% confidence…

Q: You want to obtain a sample to estimate a population mean. based on previ evidence, you believe the…

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Q: want to be 95% confident of esti you population proportion to within a sampling and there is…

A: Given that  Margin of error =E =0.05 Population proportion p=0.47

Q: Find the n amount, given that with a 95 percent confidence the error is by three percentage points…

A: Formula : Margin of error: ME=Zα/2 * √p̂(1-p̂)/n

Q: n Find the size of the sample needed to estimate the difference between the proportions of Democrats…

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Q: A local outdoor equipment store is being sold The buyers are trying to estimate the percentage of…

A: To estimate the sample size: Margin of error = 3% = 0.03 Confidence level = 99% = 0.99 Estimated…

Q: Hello. I appreciate any help. Thanks.

A: Standard Error of estimate:S=√MSEMean square error:The formula for the mean square error is,MSE =…

Q: "If the standard error of the estimate equals = 0, then r = ?" 1 -0.1

A: Hello. Since your question has multiple, we will solve first question for you. If you want remaining…

Q: n=550 x=440 90% confidence

A: Given that,  n=550 x=440  The sample proportion is, Critical values: By using the standard normal…

Q: health department nutritionist, wishing to construct a survey among a population of teenage girls,…

A: Formula for the sample size needed to estimate a population mean is

Q: If you want to be99​% confident of estimating the population proportion to within a sampling error…

A: Proportion is almost similar to the concept of probability. Proportion is a fraction of the…

Q: a researcher wants to estimate a population proportion with a margin of error of 0.05. What is the…

A: Given that the margin of error is 0.05. Given confidence level is 95% Significance level is 5% From…

Q: you want to obtain a sample to estimate a population mean. based on previous evidence, you believe…

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Q: None

A: To find the closest point zzz such that 36.98% of the observations fall above it, we assume the…

Q: A company wants to know the proportion of consumers willing to buy their product. How many people…

A: Given that ME=margin of error=1.5%=0.015z=critical value off 90% confidence…

Q: researcher wishes to estimate the proportion of the adult population of the U.S. has sleep…

A: E=0.03 99% confidence interval for z=2.576 p=0.5

Q: If you want to be 95​% confident of estimating the population proportion to within a sampling error…

A: z-critical value at alpha(0.95) = 1.96 margin of error =0.08   p = 0.5

Q: You want to obtain a sample to estimate a population mean. based on previous evidence, you believe…

A: Answer: Using the given data, Population standard deviation (σ) = 19.3 Margin of error (E) = 1.3 For…

Q: You want to estimate the percentage of small incorporated businesses that are owned by women. A…

A: The random variable percentage of small incorporated businesses follows binomial distribution. The…

Q: An event marketing executive thinks that the proportion of consumers who have seen his company’s…

A: In general terms, the larger the sample size n, the more precise of an estimate can be obtained of…

Q: You want to obtain a sample to estimate a population proportion. At this point in time, you have no…

A: sample size n=?

Q: intended population

A: A population is the entire group that you want to draw conclusions about   Intended population:…

Q: We want to obtain a sample to estimate a population mean. Based on previous evidence, researchers…

A: The sample size must be equal to 9375.Explanation:Step 1: List the given values as provided in the…

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

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Q: You want to obtain a sample to estimate a population mean. Based on previous evidence, you believe…

A: Population standard deviation(σ)=58.4 Margin of error(E)=5 confidence level=99%

Q: Suppose you survey a random sample from a large population to understand the population proportion.…

A: Obtain the sample size of a no preliminary estimate for p. The formula of sample size is, Obtain…

Q: The manager of an orchard expects about 82 percent of her apples to exceed the weight requirements…

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Q: You wish to estimate the average weight of a mouse. You obtain 10 mice, sampled uniformly at random…

A: Given data is 21,23,27,19,17,18,20,15,17,22sample size(n)=10Standard error(SE)=0.25

Q: The uncertainty associated with a confidence interval for the true proportion of a population is…

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Q: Use the data and the correct formula to find the margin of error for estimating a population…

A: Given: n = 100 x = 45 sample proportion = x / n = 45/100 =0.45 95% level of confidence  Level of…

Q: Find a Confidence interval for the true Population Proportions if n = 30,        x = 75, and the…

A: From the given information, X=75 and n=30.

Q: If you want to be 99% confident of estimating the population proportion to within a sampling error…

A: Answer:- Given, Confidence level, C = 99% = 0.99Error, E = 0.06Population proportion, p = 0.43 Using…

Q: A sample proportion is calculated from a sample size of 132. How large of a sample would we need in…

A: given data  sample size (n) = 132 how large the sample required to decrease standard error by factor…

Q: The proportion of eligible voters who will vote for Shaun Spicer in the next Presidential election…

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