In a previous study, it was found that p hat=.73 for a particular sample. Suppose we would like to repeat this study. Give the sample size n, required to have the margin of error equal to .01, at the 98% confidence level.

Q: Of the following, which is the smallest sample size that will result in a margin of error of 0.1…

A: It is given that Population SD = 1.5 Margin of error E = 0.1 Level of confidence = 99% The critical…

Q: A 95% confidence interval computed from a sample of size 50 will have a greater margin of error than…

A: A 95% confidence interval computed from a sample of size 50 will have a greater margin of error than…

Q: Calculate the 95% and 99% population proportion confidence intervals for this finding.

A: Answer: Given that  the random sample of 100 people  n=100  r=74 The test statistics for population…

Q: A national poll asked, “how would you describe your job situation now compared to before the…

A: Disclaimer : “Since you have posted a question with multiple sub-parts, we will solve first three…

Q: The Indian River County Health Department needs to estimate the proportion of all children in the…

A: 1) It is given that n=116 and the sample proportion is 0.74.

Q: If the population standard deviation is known to be 4.7 hours, and a random sample of 35 analysts…

A: Given that Sample size n = 35 Sample mean = 50.5 Population SD = 4.7 The critical value of Z at 90%…

Q: If a sample is used to estimate a population proportion p. What is the 80% confidence interval for…

A: Given  If a sample is used to estimate a population proportion p. What is the 80% confidence…

Q: A total of 300 observations of Bob Ramos, an assembly-line worker, were made over a 40-hour…

A: Given: Sample size, S = 300 Sample size where Bob was found to be working = 250

Q: In the following data, where the highest possible score is 10. If the population standard deviation…

A: Solution: Given information: n= 30 Sample size  x = ∑xn=18830=6.2667 Sample mean σ= 1.9 Population…

Q: For a fixed value of the standard deviation, a 95% confidence interval on the population mean will…

A:

Q: For a research, let's consider the 10-unit sample with s = 32,866 as a preliminary example. For a…

A: Given data,s=32866E=10z-value at 95% confidence is Zc=1.96n=?

Q: Given that you have a sample size of 10 different soda pops, with a sample mean of 2.228 and a…

A: From the provided information, Sample size (n) = 10 Sample mean (x̅) = 2.228 Sample standard…

Q: An automotive manufacturer wants to know the proportion of new car buyers who prefer foreign cars…

A:

Q: After reporting the results from a formal hypothesis test, it is often likely that statisticians…

A: We construct a confidence interval on the samples that will be used to test the hypothesis.There is…

Q: A local health center noted that in a sample of 400 patients 80 were referred to them by the local…

A:

Q: A local health center noted that in a sample of 400 patients, 80 were referred to them by the local…

A: From the provided information, Sample size (n) = 400 From which 80 were referred to them by the…

Q: If is a sample that is used to estimate a population proportion p. What is the 99% confidence…

A: Given  Sample size n=112 and proportion of success p= 0.598

Q: A local department store took a random sample of 64 charge accounts and found that the average…

A:

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

A: Given problem is : What is the smallest sample size required to provide a 95% confidence interval…

Q: The Okeechobee County Economic Development Board needs to estimate the proportion of all county…

A: It is given that 10.5% of the county residents in each sample have earned at least a bachelor's…

Q: In a study, Group 1 was found to have an average of 53 and a population standard deviation of 13 out…

A:

Q: Mrs. Voorhees claims that a Bowie knife is the most effective method of disposing rowdy campers. In…

A: Identify the correct option for the given statement. The correct option is identified below: State…

Q: In a recent poll of 900 randomly selected adults, 37 % reported that they could not swim 24 yards…

A: Given information: In a poll of 900, randomly selected adults were examined if they could swim 24…

Q: If a sample is used to estimate a population proportion p. What is the 99% confidence interval for a…

A: Given data, n=138 x=62 sample proportion p=x/n =0.449 z-value at 99% confidence is zc=2.576

Q: 1. The Marist Poll published a report stating that 66% of adults nationally think licensed drivers…

A:

Q: To find the proportion of San Diegans subscribed to Disney+ in 2019, a researcher randomly selected…

A: Given that, n=200 p^=101200=0.505

Q: In a sample of 25 fish from my pond it was found that 5 are under 165 grams in weight.  Based on…

A: Given data: x=5 n=25 p^=xn=525=0.2 Standard Error: se=p^(1-p^)n=0.2(1-0.2)25=0.08

Q: Determine the sample size necessary to construct a 95% confidence interval with an error of 0.08 if…

A:

Q: A national opinion poll found that 44% of all American adults agree that parents should be given…

A:

Q: laboratory tested twelve chicken eggs and found that the mean amount of cholesterol was 206…

A:

Q: If a school district takes a random sample of 61 Math SAT scores and finds that the average is 425,…

A:

Q: In the past, 44% of those taking a public accounting qualifying exam have passed the exam on their…

A: Given: p=0.44 n=250 X: Passing on first attempt X=130 α=0.025

Q: If a school district takes a random sample of 66 Math SAT scores and finds that the average is 480,…

A:

Q: A national opinion poll found that 44% of all American adults agree that parents should be given…

A: Given information Error = 3% = 0.03 Confidence level = 0.99

Q: A sample of 14 commuters in Chicago showed the average of the commuting times was 33.2 minutes. If…

A:

Q: A certain article indicates that in a sample of 1,000 dog owners, 610 said that they take more…

A: Given: Sample size (n) = 1000 Number of owners who take more picture of their dog than their owner =…

Q: Taking a random sample of 35 individuals waiting to be serviced by the teller, we find that the mean…

A:

Q: If a school district takes a random sample of 56 Math SAT scores and finds that the average is 488,…

A: Given information Sample size(n) = 56 Sample mean = 488 Population standard deviation (σ) = 100

Q: The cell phone conversations of a random sample of 50 students has a standard deviation of 9.7…

A: Given: n=50σ=9.7CI=90%=0.90

Q: Given that you have a sample size of 10 different soda pops, with a sample mean of 2.228 and a…

A: The provided information are:

Q: The Marist Poll published a report stating that 66% of adults nationally think licensed drivers…

A:

Q: a laboratory tested twelve chicken eggs and found that the mean amount of cholesterol was 240…

A: Sample mean = x̅ = 240 Sample size = n = 12 Sample S.D = s = 16.5

Q: From a random sample of 185 children from school G, 108 indicated they wanted to study science in…

A:

Q: If a sample of 100 people contains 15 left-handed: (a) Compute a 95% confidence interval for the…

A: Confidence interval: It is an approximate range of values within which the unknown parameter lies.…

Q: researcher takes a random sample of 100 Americans that have never had a pet and a separate random…

A:

Q: Consider the following results for two independent random samples taken from two populations.…

A: Note: Hey there, thank you for the question. Since it is given that the results are for two…

Q: What would be the standard error in computing a confidence interval for the difference of…

A: It is given that For population 1, sample size n1 = 49, sample proportion = 0.682 For population 2,…

Q: a. Suppose that a random sample of 41 state college students is asked to measure the length of their…

A: Since you have posted multiple sub-parts, we will solve the first three sub-parts for you. To get…