980 adults to learn about their gym membership. The results showed that 574 of the respondents lack confidence they will be able to gym membership in the future. Develop a 95% confidence interval for the population proportion.

Q: recent survey showed that among 725 randomly selected subjects who completed 4 years of college, 139…

A: Given that  n = 725 , Smoke = 139 , Not smoke = 586

Q: Find the critical value for the population mean if there are 756 cats in a sample and you want a 91%…

A:

Q: Listed below are the blood pressure measurements taken from the right and left arm of 5 patients.…

A: From the provided information, The mean and standard deviation of the right arm data can be obtained…

Q: A survey of 1,000 adults showed 58% believed the driving age should be changed from 16 years of age…

A: Provided information: Number of adults in a survey = 1000 58% believed the driving age should be…

Q: Out of 500 people sampled, 395 had kids. Based on this, construct a 90% confidence interval for the…

A: It is given that 395 out of 500 people sampled had kids. The sample proportion is 395/500 = 0.79.…

Q: In a survey of 2000 adults in a recent​ year, 708 made a New​ Year's resolution to eat healthier.…

A: Confidence interval for population proportion is given by, p^ +- z* √(pq/n) At 90% z = 1.645 At 95%…

Q: A medical director needs to know the proportion of patients who have a single bed in their room. A…

A: It is given that sample size (n) is 200 and p-hat value is 0.59.

Q: A sample of 500 nursing applicants included 80 men.  Determine the 95% confidence interval for the…

A:

Q: In a sample of 110 adults, 76 had children. Construct a 95% confidence interval for the true…

A: It is given that, in a sample of 110 adults, 76 had children. It is needed to find a 95% confidence…

Q: 90% and​ 95% confidence intervals for the population proportion. Interpret the results and compare…

A: Answer Favorable cases [x] = 1230The sample size [n] = 2105

Q: Use Table V in Appendix A to determine the t-percentile that is required to construct each of the…

A: It is given that the degrees of freedom is 24 and the confidence level is 0.999.

Q: In a survey of 2013 adults in a recent​ year, 731 made a New​ Year's resolution to eat healthier.…

A:

Q: You're considering going to graduate school, and you would like to know how many people would…

A: Given: X= 6, N=28. Therefore, P=XN=628=0.214

Q: If n = 440 and X = 352, construct a 90% confidence interval for the population proportion, p. Give…

A:

Q: In a survey of 2497 adults in a recent​ year, 1383 say they have made a New​ Year's resolution.…

A: The sample size (n) is 2497 and the value of x is 1383.

Q: 24. Job Interviews In a Harris poll of 514 human resource professionals, 90% said that the…

A: From the parts b) and c), the 99% confidence interval is (0.8659 , 0.9341) and the 80% confidence…

Q: A survey was conducted that asked 1004 people how many books they had read in the past year. Results…

A: From the provided information, Sample size (n) = 1004 Sample mean (x̅) = 10.4 books Sample standard…

Q: Construct a 95% confidence interval for the proportion of college students who say they own their…

A: Given : n=410 , X=155  , α=0.05 We want to find the 95% confidence interval for the proportion of…

Q: In a random sample of 250 high school students, it was found that 85.2% (213) of them later…

A:

Q: List below are the speeds (mi/h) measured from the southbound traffic on I-280, the speed limit is…

A: Given data is62,61,61,57,61,54,59,58,59,69,60,67

Q: The principal randomly selected six students to take an aptitude test. Their scores were: 88.0 84.1…

A: Solution: Let X be the score. The given data is 88, 84.1, 74.9, 83.2, 83.7 and 85.5.

Q: Out of 200 people sampled, 50 had kids. Based on this, construct a 90% confidence interval for the…

A: Given that, Total number of people sampled = 200 Number of people had kids = 50 Confidence level =…

Q: A survey was conducted that asked 1004 people how many books they had read in the past year. results…

A:

Q: Out of 400 people sampled, 336 had kids. Based on this, construct a 95% confidence interval for the…

A: Given that out of 400 people sampled, 336 had kids.  95% confidence level

Q: In a survey of 2048 adults in a recent​ year, 1217 say they have made a New​ Year's resolution.…

A: According to the provided information, n=2048 x=1217 The sample proportion is given by:…

Q: At one large college, 660 out of the 1500 students surveyed said they plan to take another science…

A: Given that,   x=660,n=1500 The sample proportion is, Critical values: By using the standard normal…

Q: When 370 junior college students were surveyed, 145 said they have a passport.  Construct a 95%…

A: Zcrit = 1.96

Q: In a sample of 190 adults, 133 had children. Construct a 90% confidence interval for the true…

A: Given:n = 190x = 133Confidence level = 90%

Q: For what type of variable does it make sense to construct a confidence interval about a population​…

A: Qualitative variable: A variable which cannot be measured in numerically is known as a Qualitative…

Q: n a survey of 2111 adults in a recent​ year, 1244 say they have made a New​ Year's…

A: For 90 % CI , α =0.1 Zα2= 1.645 (+NORMSINV(0.05) --Excel function)) ___________________ For 95% CI ,…