Suppose that we wanted to estimate the true average number of eggs a queen bee lays with 95% confidence. The margin of error we are willing to accept is 0.5. Suppose we also know that s is about 10. What sample size should we use?

Q: Suppose the sample mean is 5.0 and with 95% confidence, the margin of error is 2.5. Then, the…

A: Given: Sample mean, x¯=5confidence level=95%Margin of error, E=2.5

Q: What is the approximate sample size required to estimate the percentage of Americans who have earned…

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

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: Use the given confidence interval to find the margin of error and the sample proportion. (0.704,…

A: The confidence interval for population proportion is given by (0.704, 0.732)

Q: how large of a sample n would you need to estimate p with a margin of error 0.01 with 95%…

A: Given Information: Margin of error = 0.01 Confidence level = 95% p^=0.2 To find sample size n:…

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

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Q: We wish to know the 95% confidence interval for the population proportion of people who believe that…

A:

Q: Suppose that the sample size had been​ 240, with x bar=4.1 and s=3.1. Use technology to find a​ 95%…

A: Sample mean = x̅ = 4.1 Sample size = n = 240 Sample S.D = s = 3.1 Standard Error = s/√n  =…

Q: How large must the sample size be in order to estimate a true proportion to within one precentsge…

A: Solution: From the given information, confidence level is 0.90 and E=0.01.

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: how many people should you sample? 4 80 125 382 383

A: Given : Margin of error: ME = 0.05

Q: Construct a 95​% confidence interval to estimate the population mean when x=133 and s​ = 35 for…

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Q: Suppose you have 62 samples with sample standard deviation 4.4. A 99% confidence interval for the…

A: The confidence interval is an interval of estimating the unknown value of the population parameter,…

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: A television sports commentator wants to estimate the proportion of citizens who​ "follow…

A: Solution: a. From the given information, confidence level is 0.96, p=0.48 and E=0.03.

Q: In a study of government financial aid for college​ students, it becomes necessary to estimate the…

A: Given information- Margin of error, E = 0.03 Confidence level, c = 90% Since nothing is known about…

Q: Determine the margin of error for the confidence interval for the proportion: 0.557 < μ< 0.837 The…

A: It is given that the confidence interval for proportion is as follows: 0.557 &lt; µ &lt; 0.837.

Q: If n=490 and ˆpp^ (p-hat) =0.4, find the margin of error at a 90% confidence level Give your answer…

A: Given that, n = 490 p^=0.4 90% confidence level

Q: What sample size should be selected to estimate the proportion of out of state guests with a margin…

A: Margin of error, ME = 0.05 sample proportion, p̂ = 0.45 confidence level, c = 95 % = 0.95…

Q: #5 What sample size is needed to give a margin of error of  ±4%  in estimating a population…

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Q: Suppose that you are attempting to estimate the weight of 600 parts. In order to use the infinite…

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Q: Use the given confidence interval to find the margin of error and the sample proportion.…

A: According to the given information, we have Confidence interval = (0.690, 0.718)

Q: If the sample mean is 70 and the standard error of the sample mean is 8, what will be the 90%…

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Q: If we were to ask for a minimum sample size for a 94% level of confidence what would the value for…

A: Confidence Level = 0.94

Q: 4.An internet service provider wishes to estimate, to within one percentage error, the current…

A: Given : Margin of error (E) = 1% = 0.01 Confidence level = 85% So , significance level (α) = 15% =…

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: 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: What is the smallest sample size required to provide a 95% confidence interval for a mean, if the…

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Q: 5. If the error for estimating µu was within 4 units, how many should we sample at 98% Confidence…

A: Given information- Error, E = 4 units Confidence level, c = 98% Standard deviation, s = 29 Margin of…

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

A:

Q: 4. How large a sample must be taken to estimate the proportion of households in which a cell phone…

A: In probability theory, a normal distribution is a type of continuous probability distribution for a…

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

A: From the given information, The sample size is 268. Proportion=p^=20.9%=0.209 Confidence level is…

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: estimate the population proportion p,what is the minimum sample size we need in order to achieve a…

A: Solution: From the given information, confidence level is 0.95, p=0.1 and E=0.01.

Q: A confidence interval for a population proportion p is 0.635 to 0.700. What is the margin of error?

A: We have given that confidence interval for a population proportion p is 0.635 to 0.700.

Q: If the sample mean is 70 and the standard error of the sample mean is 8, what will be the 90%…

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Q: As the sample size gets smaller, what happens to the width of your confidence interval? O Wider /…

A: A confidence interval is an interval with a certain probability that a parameter will fall between…

Q: When calculating confidence intervals for differences between two population means, the sample size…

A: Determine whether the given statement is true or false

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

A: From the given information, Sample size (n) =123 Confidence level 1-α=0.99 Consider, population…

Q: If no previous study has been done, give the sample size we should use to find p with a margin of…

A: From the provided information, Margin of error (E) = 0.02 The confidence level = 90% The sample…

Q: what sample size should a researcher take if he wants to estimate a population proportion to be 2%…

A: From the given information,   Margin error = 0.02 Assume sample proportion = 0.5   Critical value:…

Q: In a survey of 1037 US adults ages 65 and over, 643 were concerned about getting the flu. A 99%…

A:

Q: Suppose we know that a confidence interval for a population proportion is (0.105,0.355), with a…

A: Obtain the margin of error. The margin of error is obtained below: Margin of Error: The margin of…

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

A: From the provided information, Sample size (n) = 272 Probability of successes (p̂) = 27.9% or 0.279…

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…

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Q: It is desired to draw a sample with a 95% confidence level and a 5% significance level from a…

A: The formula of finding a sample size(n) for a given population size and confidence interval is given…

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

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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.