It is said that happy and healthy workers are efficient and productive. A company that manufactures exercising machines wanted to know the percentage of large companies that provide on-site health club facilities. A sample of 240 such companies showed that 102 of them provide such facilities on site. Construct a 97% confidence interval for the percentage of all such companies that provide such facilities on site. What is the margin of error for this estimate? Round your answers to one decimal place. Confidence interval: _________% to _______________% Mrgin of error _____________%

Q: To construct a confidence interval for each of the following quantities, say whether it would be…

A: Note: Hey, since multiple subparts are posted, we will answer first three subparts according to our…

Q: An online seller of Yema Cake, surveyed several customers. Fifty-two percent (52%) of the customers…

A: Given data: Population proportion = 0.52 Margin of error = 3.98% To calculate: Confidence interval

Q: A researcher is interested in whether patients have better results with a new treatment as compared…

A:

Q: Campus athletics is interested in the proportion of registered students living on campus who play…

A: We are given that 95% confidence interval is correctly calculated from the given data as (0.12,…

Q: a. How many of the 3039 subjects used at least one prescription medication? (Round to the nearest…

A: Given : Total sample size of the survey  = 3039 Out of the sample, proportion of people who have…

Q: When a survey asked subjects whether they would be willing to accept cuts in their standard of…

A: It is given that 362 out of 1,180 subjects respond yes.The sample proportion is 362/1,180 =…

Q: A simple random sample of 400 individuals provides 100 Yes responses. a. What is the point estimate…

A: Given information x = 100 Sample size (n) = 400

Q: Greece has faced a severe economic crisis since the end of 2009. A Gallup poll surveyed 1,000…

A:

Q: 3. In a survey of 209 Montana residents, 61 reported their financial status was worse than a year…

A: (a) Computing the point estimate of population proportion:The point estimate of population…

Q: Tollowing A government offic charge of allocating social programs throughout city of Vancouver. He…

A: Given: Sample size (n) = 122 Number of success (x) = 20 Confidence level = 0.95 Sample proportion =…

Q: When 346 college students are randomly selected and​ surveyed, it is found that 114 own a car. Find…

A: Solution: Let X be the number of college students who own a car and n be the sample number of…

Q: Campus athletics is interested in the proportion of registered students living on campus who play…

A: The 95% confidence interval is (0.12, 0.18).

Q: a. Use the sample data to construct a 95% confidence interval estimate of the percentage of cell…

A: Given that Sample size n = 420078 Number of cell phone user who developed cancer, X = 130 The…

Q: In a survey, a random sample of teenagers were asked whether they have a sibling. The resulting…

A:

Q: Which of the following would result in the narrowest confidence interval? A. 80% confidence level…

A: The narrowest confidence interval will result from larger sample size and a smaller confidence…

Q: airline is considering charging a two-tiered rate for checked bags based on their weight. Before…

A:

Q: Based on the provided sample data determine the 95% Confidence Interval for the proportion of all…

A: The total frequency is 15+12+27+54+42=150.

Q: sample st. dev   Point estimate =                     Margin of the Error =   Show the Formula that…

A: The point estimate can be obtained using the excel formula “=AVERAGE(A1:A28)”. From the Excel…

Q: Two competing airlines, Alpha and Beta, fly a route between Des Moines, lowa, and Wichita, Kansas.…

A:

Q: market analyst is curious what proportion of Carolina residents have a landline. A survey of 94…

A:

Q: A researcher in campaign finance law wants to estimate the proportion of elementary, middle, and…

A: Given, Margin of error, E = 0.05 Confidence level = 95%

Q: Do People Think the Sun Goes around the Earth? In the 2018 General Social Survey, people were asked…

A: According to our policy we can answer only first three part for remaining please repost the…

Q: he drug Viagra became available in the U.S. in May 1988, in the wake of an advertising campaign that…

A: A confidence interval estimate is an interval estimate that includes the unknown population…

Q: O Construct a 95% confidence interval for the population proportion of people would have their…

A: It is given that Sample size n = 1950 Number of participants answered yes, X = 663 The critical…

Q: To construct a confidence interval for each of the following quantities, say whether it would be…

A: Note: Hey there! Thank you for the question. As you have posted a question with multiple sub-parts,…

Q: A survey of 800 women shoppers found that 17% of them shop on impulse. What is the 98% confidence…

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Q: What proportion of OSU students earn their undergraduate degrees in four years? A college…

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Q: Using the accompanying colleges and universities data to find 95% confidence intervals for the mean…

A: We first compute the mean and standard deviation for the two groups using excel as below: Liberal…

Q: Two competing airlines, Alpha and Beta, fly a route between Des Moines, lowa, and Wichita, Kansas.…

A: From the provided information, Margin of error (E) = 0.04 Confidence level = 90% Proportion (p1) =…

Q: b. Calculate a 95% confidence interval for the proportion of the population who have been told they…

A: b. A sample 1,414 adults are taken for a survey to ask the question that "Have you ever been told…

Q: An online seller of Yema Cake, surveyed several customers. Fifty-two percent (52%) of the customers…

A:

Q: Use the given degree of confidence and sample data to construct a confidence interval for the…

A:

Q: Using the data below, a) generate a 95% confidence interval for the proportion of all patients with…

A: It is given that, p hat is 0.715, margin of error (E) is 0.05 and the sample size (n) is 150.  The…

Q: Suppose that you wanted to estimate the population mean amount spent eating out per week by…

A: The question is about sample size estimation Given: Sample std. deviation = 200 dollars Margin of…

Q: n our Condor Cafe, the Oxnard College Culinary Program offers the most delicious and affordable…

A: Given that, n=255,x=75

Q: What is the critical t-value for finding a 95 percent confidence interval estimate from a sample of…

A: Given: Sample size (n)=18 Confidence level = 95% Level of significance = 1-confidence level = 1-0.95…

Q: An environmental science teacher at a high school with a large population of students wanted to…

A: Question : (b) Given the method used by the environmental science teacher to collect the responses,…

Q: A recent survey of cell phone users indicated that 56 percent of the respondents prefer to use cell…

A: Given that 56% of the respondents prefer to use cell phones for texting rather than for making phone…

Q: he Pew Social Media Update 2014 surveyed 1,597 adult internet users on which social media websites…

A: Given information- We have given that Social Media Update 2014 surveyed 1,597 adult internet users…

Q: I need help with question 18 please

A: Sample mean and sample standard deviation:Enter the data in an EXCEL sheet such that A1:A7 represent…

Q: Hi. How do you calculate this problem? Is there a way to do this on a TI-83? Thanks.

A: Note:Hi, we are solving this problem with manual calculations. Thank you.

Q: Pharmaceutical companies promote their prescription drugs using television advertising. In a survey…

A: Given data: Sample size = 80    x = 10 asked their  physician Confidence level  = 95%

Q: The U.S. Department of the Interior is checking cattle on the Windgate open range in Montana. A…

A:

Q: whether they have cell phones. Of the 400 people sampled, 336 responded yes - they own smart phones.…

A: Given that, Sample size n=400 a. sample statistic: The sample statistic is the sample proportion of…

Q: A random sample of 80 people was selected, and 22 of the selected people indicated that it would be…

A: Given information: Sample size n=80 Number of selected people who indicated that it would be a good…

Q: A certain department store is interested in estimating the average amount its credit card customers…

A: According to our guidelines we can answer only first question and rest can be reposted.

Q: In the construction of confidence intervals, if all other quantities are unchanged, a increase in…

A: Given : sample size in increased

Q: Refer to the following scenario. An epidemiologist is worried about the prevalence of the flu in…

A: Solution: Given data: simple random sample(n) = 332 x =  40 (have recently had the flu)  95% =…

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.