Suppose that you calculated the sample size needed to estimate a population proportion within a given margin of error and the answer came out to n = 115.26. How many items should be sampled? 115 100 116 115.26

Q: Determine the sample size associated with the following formula. Remember to always round up to the…

A: Solution Answer is 112

Q: You are the operations manager for an airline and you are considering a higher fare level for…

A: It is given that margin of error (E) is 0.045 and the confidence level is 0.99.

Q: Use the expression in the accompanying discussion of sample size to find the size of each sample if…

A: From the provided information, Margin of error (E) = 0.06 Confidence level = 95% The Z value at 95%…

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

A: Solution: From the given information, confidence level is 0.999 and E=0.05.

Q: physicians

A: Number of success = x= 3145 n=5804

Q: A researcher wishes to estimate the number of households with two cars. How large a sample is needed…

A: Given :Margin of error:ME = 0.06sample proportion:p̂ = 0.23

Q: Use the expression in the accompanying discussion of sample size to find the size of each sample if…

A: Find z-critical value:…

Q: When estimating the population proportion, how large a sample is needed to be 95% confident that the…

A: Given:  The margin of error is equal to 0.05  Confidence Level : 95%  It is asked to compute the…

Q: According to previous studies, 10% of the U.S. population is left-handed. Not knowing this, a high…

A: From the provided information,

Q: A sample selected from a population gave a sample proportion equal to 0.60.

A:

Q: Determine the sample size associated with the following formula. Remember to always round up to the…

A: Solution

Q: A researcher wishes to estimate the number of households with two cars. How large a sample is needed…

A:

Q: You are the operations manager for an airline and you are considering a higher fare level for…

A: Given Information:Margin of error, E=1.5%=0.015Confidence level, c=95%=0.95

Q: 2. Let sample proportion . How large a sample should be taken to be 95 % sure that the error of…

A: Let proportion be p=0.50 E=0.02 z-value at 95% confidence is Zc=1.96 n=?

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

A:

Q: I want to estimate the proportion of college professors who believe in aliens. How many college…

A: It is given that margin of error (E) is 0.05 and the confidence level is 0.95.

Q: You are the operations manager for an airline and you are considering a higher fare level for…

A:

Q: A researcher wishes to estimate the number of households with two computers. How large a sample is…

A: Givenconfidence level = 90%Margin of error(E)=2%=0.02p^=0.45

Q: In a random sample of 73 items produced by a machine, the quality control staff found 25 of them to…

A: Sample proportion is always a point estimate of population proportion

Q: For the sample: 45 84 73 58 54 73 52 60 51 80. Determine the mean and round to the nearest integer.…

A: Given data is 45,84,73,58,54,73,52,60,51,80sample size(n)=10

Q: et p be the proportion of all permanent dwellings on the entire reservation that are traditional…

A: We have given that r = 5020 n = 1669 Since we know that the formula of point estimate is given by…

Q: Does Octane matter? Some people believe that different octane gasoline result in different miles per…

A: Solution: Let x= Miles on 87 octane  and y =Miles on 92 octane  x y d =y-x (d-d) (d-d)2 234…

Q: From the sample statistics, find the value of p1 - p2, the point estimate of the difference of the…

A: From the provided information,

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

A: Given that  Margin of error =E =0.05 99.9% confidence level

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

A:

Q: A random sample of medical files is used to estimate the proportion p of all pe who have blood type…

A:

Q: Suppose a random sample of n= 320 teenagers 13 to 17 years of age was asked if they use social…

A:

Q: You are the operations manager for an airline and you are considering a higher fare level for…

A:

Q: In a random sample of 82 professional actors, it was found that 45 were extroverts. Let p represent…

A: Let  X be number of extrovert out the number 'n'Then Proportion of extrovert ( )=

Q: d. Give a 95% interval estimate of the number of fatal accidents per 1000 licenses in a city where…

A: Solution:  Given information: n= 42  Sample size  MSE= 0.3473  Mean square  error  The degree of…

Q: Use the expression in the accompanying discussion of sample size to find the size of each sample if…

A:

Q: How many students should be sampled in order to be 90% confident in estimating the proportion in…

A: Given that  Margin of error =E =0.10 90% confidence.

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

A:

Q: What is the standard error of the sample proportion of people that like a product if you have a…

A:

Q: company wanted to estimate the proportion of employees who use mass transit to get to work. The…

A:

Q: Assume critical reading scores for a standardized test are distributed as N(580, 100). Complete…

A: Given that  The test scores are normally distributed. Mean (μ) = 580 Standard deviation (σ) = 100 We…

Q: A researcher wishes to estimate the number of households with two computers. How large a sample is…

A: population proportion (p) = 0.23 let, sample proportion = m and , number of samples to be collected…

Q: a. Assume that nothing is known about the percentage of passengers who prefer aisle seats. n = 1356…

A: a)  Given that the margin of error is 0.035. Confidence level is 99%. And Significance level is 1%…

Q: A survey of 100 fatal accidents showed that 26 were alcohol related. Find a point estimate for p,…

A: Given information: Sample size of the survey of fatal accidents n=100 Number of accidents that were…

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: You are the operations manager for an airline and you are considering a higher fare level for…

A: Suppose p is the true population proportion of air passengers who prefer aisle seats.