tests its employees about company policies. Last year in the 530 random tests conducted, 20 employees failed the test. a. What is the point estimate of the population proportion? (Round your answers to 1 decimal places.) b. What is the margin of error for a 99% confidence interval estimate? (Round your answers to 3 decimal places.) c. Compute the 99% confidence interval for the population proportion. (Round your answers to 3 decimal places.) d. Is it reasonable to conclude that 4% of the employees cannot pass the company policy test? multiple choice

Q: You wanted to know how long on average a business student at your university studies per night. You…

A: Given data is 2,1,3,2,4,1,0,3,2,4sample size(n)=10

Q: You are interested in finding a 95% confidence interval for the mean number of visits for physical…

A: Given,mean(x¯)=13.6standard deviation (s)=9.1918sample size(n)=10degrees of…

Q: Calculate the lower 95% confidence interval for the population mean. (round to the nearest tenth)…

A: given data n = 31σ2 = 15∴σ = 15 = 3.873x¯ = 5695% ci for μ = ?

Q: Explain when you would use the paired-samples procedure to make confidence intervals  and test…

A:

Q: When 460 junior college students were surveyed, 100 said they have a passport. Construct a 95%…

A: Given that there are 460 junior college students and 100 said they have a passport. That is, n=460…

Q: Calculate a 95% confidence interval on the mean rating for each hospital. Plot the intervals and…

A: Given Information :  Hospital comparison data . A healthcare consultant wants to compare the patient…

Q: pretty sure is in your interval? 1. 90% of the sample data. II. 90% of all sample proportions. III.…

A: Construct 90% Confidence interval for population proportion p

Q: 24 A jam manufacturer claims that the mean amount of jam in its 5-ounces jars is 5.1 ounces. A…

A:

Q: Viola wishes to estimate the average amount horse eat per day, in pounds of hay. She conduct a…

A:

Q: 9s

A: Margin of error =E =5%=0.05 90% confidence level

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

A: From the provided information Sample size (n) = 29, People who recommend x = 9 The sample proportion…

Q: To estimate the proportion of smoker a sample of 100 men was selected. In the selected sample, 40…

A:

Q: For the same sample statistics, which level of confidence would produce the widest confidence…

A:

Q: 13. This summer, when I was doing gardening, I got some seeds. The packet with seeds said that 95%…

A:

Q: Emilio wants to estimate the percentage of people who have a financial adviser. He surveys 350…

A: given data  n = 350 x = 76 we have to interprete 99% confidence intervl.

Q: Hearts College found that 50 students out of a sample of 600 students take the subway to school.…

A: Given data is fit for difference of proportions. we need to find the confidence interval for 90%.

Q: In a survey of 2587 adults in a recent​ year, 1241 say they have made a New​ Year's resolution.…

A: From the provided information Sample size (n) = 2587 1241 say they have made a New​ Year's…

Q: na survey of 2231 adults in a recent year, 1464 say they have made a New Year's resolution.…

A: Given data, n=2231 x=1464 p=x/n=1464/2231=0.656

Q: There is a popular lottery in which a ticket is called a scratcher. You are an auditor and want to…

A:

Q: Use the sample data and confidence level given below to complete parts​ (a) through​ (d).   A…

A:

Q: How many people should be surveyed to construct a 95% confidence interval with error = 3% to…

A: Given that Margin of error, E = 0.03 Population proportion, p = 0.15 Level of confidence = 95%

Q: A national health organization says that 30% of teenagers have tried smoking cigarettes. A health…

A: given data N =3500n = 280x = 56claim : p = 0.30

Q: e a sample of 306 suspected crimina 85% confidence interval for the pop O Most Wanted list. Round…

A: We need to construct the 85% confidence interval for the population proportion.  A confidence…

Q: Lower %3D

A:

Q: Construct the 90% confidence interval for the difference p1-p2 when x1=45, n1=85, x2=20, and n2=65.…

A: Given Information: x1=45n1=85x2=20n2=65c=90%=0.90

Q: A 2018 poll of 3619 randomly selected users of a social media site found that 2463 get most of their…

A: We provide solution only part (b) Solution-:  Given: n=3619, x=2463, c=0.95 We want to find 95% C.I.…

Q: Several years ago, 41% of parents who had children in grades K-12 were satisfied with the quality of…

A: Followings are the Explanation of the question Use the One sample Z proportion t test and its…

Q: According to a recent survey of 1100 people, 61% feel that the president is doing an acceptable job.…

A: 90% confidence interval is given as Sample proportion ± Z(Critical Value)*SE   Here we have Sample…

Q: Stanford University conducted a study of whether running is healthy for men and women over age 50.…

A: Given information: n = 695 P(Died) = 1.1%

Q: You plan to construct a confidence interval for the population proportion p. In order to do so, you…

A: Correct answer is d. All of the above.

Q: ou are a manager for a local convenience store. You want to determin proportion of your customers…

A: Given that  Margin of error =E=6.50%=0.0650 99% confidence.

Q: A research institute poll asked respondents if they felt vulnerable to identity theft. In the poll,…

A: It is given that x = 556n = 914Confidence level = 95%

Q: The actual percentage of Americans who support same-sex relations is an example of a(n) a.…

A: Estimation is a process whereby we select a random sample from a population and use a sample…

Q: In a sample survey, 138 students failed the exam out of 200 total students.  1. Calculate the 95%…

A:

Q: Use the sample data in Example #1 (picture) and a technology tool to construct 75%, 85%, and 99%…

A: Given:

Q: use among teenagers. In the first 95% confidence interval, the sample size was "A," and in the…

A: With Increasing the sample size, margin of error decreases so the confidence interval width also…

Q: In a survey of 1036 adults, a poll asked, "Are you worried or not worried about having enough money…

A: From the provided information, Sample size (n) = 1036 649 stated that they were worried about having…

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: What Z score would be used to construct a 90% confidence level? Is it ... a. 1.65 b. 2.33 c.…

A: Confidence Level = 90 Significance Level = α = (100-90)% = 0.1 Critical value = z* = 1.65   […

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

A: Given data, n=30 x=7 p=x/n =7/30 =0.23 z-value at 96% confidence is Zc=2.05

Q: Problem: Use the data given in Example #1 to construct a 95% confidence interval for the mean number…

A: Given data:

Q: You sample 36 students to find out how many hours they spent online last week. Your sample mean is…

A: From the provided information, Sample size (n) = 36 Sample mean (x̅) = 54 Population standard…

2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.