12. In a sample of 600 Canadians, 265 say they would rather retire in the US than in Canada. Calculate the 95% confidence interval for the true proportion of Canadians who would rather retire in the US.

Q: If instead of 25, 80 male runners are selected for the study, what is the sampling error at 95%…

A: It is given that Sample size n = 80 Sample mean M = 53 Population SD = 5.5 Margin of error E = 0.8…

Q: ) When 415 junior college students were surveyed, 150 said they have a passport. Construct a 95%…

A:

Q: If we want to be within 0.02 of the true proportion of homes that have a direct television receiver…

A: The population proportion is 82%, the confidence level is 98% and estimate is within 0.02.…

Q: 4. 14 out of 20 voters in Pennsylvania reported having voted for an independent candidate. It is…

A: Critical Value: In a test of hypotheses, Critical Values are the cut-off values that provide the…

Q: . How many of the 3335 subjects used at least one prescription​ medication? b. Construct a​ 90%…

A: n = 3335 p = 0.804

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

A: Givenx=39n=334p^=xn=39334=0.116766Margin of error(E)=0.05Confidence…

Q: 2. A national health organization warns that 30% of the middle school students nationwide have been…

A: Given : n = 110 X = 21

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

A: Given information Error = 2% = 0.02 Confidence level = 0.95

Q: What proportion of homes for sale in Ohio are sold through a real estate agency? In a survey of a…

A: The confidence interval is 0.69 to 0.81.

Q: Suppose you calculate a 99% confidence interval to be: 13.05 to 20.75. Determine the margin of error

A: Given data: The given upper limit is b=20.75. The given lower limit is a=13.05.   The expression for…

Q: In a middle school with 500 students, it was found that the true proportion of brunettes is 17.8%.…

A: To find: which of the following statements will be true?

Q: In a survey with human resources managers, 71% of respondents thought they should hire new staff…

A: Given information: Denote the population proportion of all respondents who thought that they should…

Q: A Florida newspaper reported on the topics that teenagers most want to discuss with their parents.…

A: Given that there are 533 teenagers and the percentage of more family discussions about school is 37%…

Q: 11. A university planner wants to determine the proportion of spring semester students who will…

A: According to the given information, we have Total number of students = 32 12 students will return…

Q: 11. A television station surveys 200 customers and finds that 23% of customers watch the evening…

A: Margin of error = z*√(pq/n) Where z= z value            n=no of customer            q=1-p…

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

A: According to the provided information, The z score at 95% confidence interval from the standard…

Q: In the Framingham Offspring study 3630 subjects were on anti-hypertensive medication out of 4657…

A: Note: Hi, thank you for the question. As per our company guideline we are supposed to answer only…

Q: 1. The Hartford Insurance Company wants to estimate the percentage of drivers who change tapes or…

A: Please see the attachment..

Q: 2. A researcher wants to estimate the daily expenses of college students. He wants a 95% confidence…

A: We have given that,  Population standard deviation (σ) = 99.50, margin of error (E) = 45 and…

Q: A simple random sample of 120 vet clinics in the Midwest reveals that the vast majority of clinics…

A: Given that  Sample size n =120 Favorable cases x =88 Sample proportion p^=x/n  =88/120 =0.7333

Q: (a) If researchers decide on a 4.2% margin of error for a 95% confidence interval. What sample size…

A: From provided information, Sample proportion is (p̂) = 50% i.e. 0.5 The sample size can be…

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: If we wanted to reduce the margin of error to 3.5 per cent, how big would our sample ze have to be…

A: We have given that,  Margin of error (E) = 3.5% = 0.035 and confidence level = 95% = 0.95 Then,  We…

Q: 4.An internet service provider wishes to estimate, to within one percentage error, the current…

A: Given : Margin of error (E) = 1% = 0.01 Confidence level = 85% So , significance level (α) = 15% =…

Q: 2, A recent survey asked San Diego residents the following question: "If you had been aware that…

A:

Q: In June 2020, a Gallup Poll asked U.S. adults whether immigration was a good thing or a bad thing…

A: Given X=600 n=1000

Q: 2. In a survey of 1024 US adults, 287 said that their favorite sport to watch is football. a. Find a…

A: It is given that the survey contains 1024 US adults and the number of US adults who favorite sport…

Q: f n=300 and ˆpp^ (p-hat) =0.18, find the margin of error at a 99% confidence level Give your answer…

A:

Q: If n=510 and p (p-hat) =0.47, find the margin of error at a 90% confidence level Give your answer as…

A:

Q: Suppose we know that a confidence interval for a population proportion is (0.572, 0.662), with a…

A:

Q: Suppose we would like to estimate the proportion of all NBA fans who thought Aaron Gordon won the…

A:

Q: (a) Find a point estimate for the true proportion of all workers that would have hearing impairment.…

A: 8. A study was conducted on hearing impairment among workers in a construction site.

Q: The same Gallup poll asked its 1523 adult respondents and also 501 teens (ages 13 to 17) whether…

A: No. of adult respondents=1523 No. of teen respondents=501 Percentage of adults responding yes to…

Q: 1. In a poll of 2,500 likely voters, 966 say that the Philippines spend too little on education.…

A:

Q: If n = 520 and p^ = 0.85, construct a 99% confidence interval

A: Here, n = 520 and p hat = 0.85.

Q: How many subjects would be needed to ensure that a 95% confidence interval estimate of BMI had a…

A:

Q: Suppose you are designing a survey of firework plans among Kansas residents. You would like for the…

A: Here we need to find the required sample size with a 95% confidence level to estimate the number of…

Q: How many subjects would be needed to ensure that a 95% confidence interval estimate of BMI had a…

A: Given data set is28,21,37,38,24,28,38,47,27,32,36,43sample size(n)=12confidence level=95%Margin of…

Q: Wisconsin Public Radio wants to duplicate a survey conducted in 2011 that found that 68% of adults…

A: From the provided information, Sample proportion (p̂) = 0.68 The z critical value at 90% confidence…

Q: 3: In a poll of 1000 likely voters, 560 say that the United States spends too little on fighting…

A:

Q: In a study of the nicotine patch, 21% of those who used the patch for 2 months reported no smoking…

A: Solution: It is given that, 21% of those who used the nicotine patch for 2 months reported no…

Q: b. If many groups of 537 randomly selected Americans were surveyed, then a different confidence…

A: ANSWER:-  95% confidence interval means 95% confident contains true mean of the population. Means…

Q: Identify the at-score for a 99% confidence interval if the sample size is 70.

A: givensample size(n)=70α=1-0.99=0.01

Q: If n=570 and ^p(p-hat) =0.5, construct a 99 percent confidence interval. In order to use technology,…

A: Here it is given that ,  Sample size , n = 570. Sample proportion (p⏞) =0.5  , Confidence level  =…

Q: 2. You are going to construct a 90% confidence interval for the proportion of adults that have a…

A: From the given information, let X be the number of adults that have a post-secondary education. The…

Q: Suppose you calculate a 99% confidence interval of 14.71 to 21.64. Determine the margin of error.

A: Given information- We have given a value of 99% confidence interval is- C.I = (14.71, 21.64) Lower…

Q: Suppose that based on a random sample, a 95% confidence interval for the mean hours slept (per day)…

A:

Q: Imagine that the confidence interval around a candidate's popularity score is [37.22,48.86],what is…

A: The confidence interval provides an estimated range of values that includes an unknown population…

Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.