Workers in several industries were surveyed to determine the proportion of workers who feel their industry is understaffed. In the government sector, 37% of the respondents said they were understaffed, in the health care sector 33% said they were understaffed, and in the education sector 28% said they were understaffed. Suppose that 200 workers were surveyed in each industry.  Construct a 95% confidence interval for the proportion of workers in each of these industries who feel their industry is understaffed!

Q: Workers in several industries were surveyed to determine the proportion of workers whofeel their…

A: The confidence level is 95%. Therefore, the significance level, α = 0.05 and the z value…

Q: Suppose we want to estimate the proportion of teenagers (aged 13-18) who are lactose intolerant. If…

A: Given information Error = 4% = 0.04 Confidence level = 0.95

Q: The figure to the right shows the results of a survey in which 1001 adults from Country​ A, 1002…

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

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: 2. A nutritionist wants to know the population proportion of Grade 1 learners who eat vegetables.…

A: We have given thatn = 1200x = 200p̂ = x/n = 200/1200 = 0.167Significance level (α) = 1 - 0.95 = 0.05

Q: Della has over 500 songs on her mobile phone, and she wants to estimate what proportion of the songs…

A: The formula for the confidence interval is , CI=p^± Z*p^1-p^n Where,  p^=the proportion in sample…

Q: We surveyed 53 people in an attempt to determine the proportion of Americans who lease a vehicle. 13…

A: The proportion of sample Americans who lease a vehicle is, Thus, the proportion of sample Americans…

Q: In a random sample of 100 voters in a school district, 40 of them stated they were in favor of the…

A: Solution: Let X be the number of voters stated they were in favor of the school district bond…

Q: Out of 156 Nielsen families surveyed about their viewing habits, 43 felt that television was too…

A: We have given that,  Favorable cases (X) = 43 and sample size (N) = 156  Then,  We will find the 99%…

Q: Suppose we want to estimate the proportion of teenagers (aged 13-18) who are lactose intolerant. If…

A:

Q: Find the margin of error for the given confidence level.

A: Margin of error :  In a confidence interval, the range of values above and below the sample…

Q: 1992, the women in two statistics classes for students in the liberal arts at a large northeastern…

A: In 1992, the women in two statistics classes for students in the liberal arts at a large…

Q: A cable company claims that 88% of its customers are fully satisfied with their service. A…

A: Given that  Sample size n =350 Favorable cases x =287 Sample proportion p^=x/n  =287/350 =0.82

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A: Solution:There is no estimates available, hence the sample proportion is assumed to be 0.50.The…

Q: In September 2011, Gallup surveyed 1,004 American adults and asked them whether they blamed Barack…

A: It is given that sample size (n) is 1004 and p-hat value is 0.53.

Q: A manager at ACME Equipment Sale and Rental wondered how offering a free two-year service warranty…

A:

Q: In a survey of 3473 adults aged 57 through 85​ years, it was found that 84.6% of them used at least…

A:

Q: Of 380 randomly selected medical students, 210 said that they planned to work in a rural community.…

A: Solution: Let X be the number of medical students said that they planned to work in a rural…

Q: The following table shows the results of a survey in which 1017 adults from the United States, 1060…

A: (1)

Q: The figure to the right shows the results of a survey in which 999 adults from Country​ A, 1006…

A: Hey, since there are multiple subparts posted, we will answer the first three subparts. If you want…

Q: A random sample of 600 voters in Centreville indicated that 90 of them believed their congressional…

A: Formula for confidence interval for population proportion : CI =p^ ± E  Where ,  p^ is sample…

Q: From a survey of 350 coworkers you find that 231 would like the company to provide on-site daycare.…

A: Given that,  Sample size is n= 350  And we find 231 would like the company to provide on-site…

Q: Elly and Drew work together to collect data to estimate the percentage of their classmates who own a…

A: Given that Elly and Drew work together to collect the data to estimate the percentage of their…

Q: are the 95 percent confidence limits on the difference between the population means, where…

A: The data for listed from a before-and-after experimental design After Before 54 35 79 49…

Q: Refer to the data set of 20 randomly selected presidents given below. Treat the data as a sample and…

A: From the provided data set, it is clear that out of 20, 10 presidents were taller than their…

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

A:

Q: A regional survey of 561 companies asked the vice president of operations how satisfied he or she was…

A:

Q: An internet service provider sampled 540 customers and found that 55 of them experienced an…

A:

Q: Workers in several industries were surveyed to determine the proportion of workers who feel their…

A: Confidence interval: The (1-α) % confidence interval for proportion p is given by,

Q: manager at ACME Equipment Sale and Rental wondered how offering a free two-year service warranty on…

A: a.  All necessary assumptions are met: The sampling method for each population is simple random…

Q: A Gallup poll asked a sample of Canadian adults if they thought the law should allow doctors to end…

A: (a) The sample proportion of Quebec adults who would allow doctor-assisted suicide is, The critical…

Q: The figure to the right shows the results of a survey in which 996 adults from Country A, 1006…

A:

Q: The true proportion of c.c. students in her state, that receive an AD, is contained in that specific…

A: It is given that the confidence interval in b is calculated correctly.

Q: n 2013, the Gallup poll asked 1,039 American adults if they believe there was a conspiracy in the…

A: Given data, n=1039 x=634 sample proportion p=x/n =634/1039 =0.61   z-value at 90% confidence is…

Q: The following data represents the monthly cost for telephone service for a random sample of 8…

A: The data for a random sample of 8 households in Wilmington is provided which represents the monthly…

Q: Workers in several industries were surveyed to determine the proportion of workers whofeel their…

A:

Q: The table shows the results of a survey in which separate samples of 400 adults each from the East,…

A: Given : n = 400 p̂= 0.26

Q: A school administrator wants to know what proportion of the approximately 80,000 teachers in their…

A: Given: x=55n=100

Q: A recent study of 750 internet users in Europe found that 35% of internet users were women. What is…

A: It is given that the study of 750 internet users in Europe found that 35% of internet users were…

Q: 12. In a sample of 500 Canadians, 275 say they would rather retire in the US than in Canada.…

A: From the given information, Consider, X be the random variable that denotes the number of people who…

Q: The dean of students at a large college is interested in learning about their opinions regarding the…

A: Experiment is the study used to understand something about the population. In an experiment,…

Q: A political researcher takes a survey of 310 randomly selected registered voters in Orlando, and…

A:

Q: A recent survey of 1,000 people found that 90% of Americans support background checks for purchasing…

A:

Q: If a retailer would like to estimate the proportion of their customers who bought an item after…

A: Solution: 3. From the given information, confidence level is 0.90 and E=0.03.

Q: confidence interval for the true proportion

A: We have to find out the confidence interval for the true proportion.

Q: Aston’s Career Service wants to find out what proportion of Aston’s students work in a part-time…

A: From the given information, Population proportion = p = 60% = 0.60 Margin of error = E = 4% = 0.04…

Q: In a past presidential election, 36,523,493 people voted for Candidate A; 36,417,321 for Candidate…

A: The appropriate interpretation is to be made considering the proportion of votes for candidate A.

Q: Construct a 99% confidence interval for the proportion of all motorbike license applications that…

A: We want to find the 99% confidence interval  Given  X=20 , n=175

Q: The figure to the right shows the results of a survey in which 1013 adults from Country A, 1001…

A:

Q: The figure to the right shows the results of a survey in which 1014 adults from Country A, 1012…

A: Hello there! There are more than three subparts in the question. According to our policies can…

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.