Hearts College found that 50 students out of a sample of 600 students take the subway to school. Peach College found that 28 students out of a sample of 400 students take the subway to school. Construct a 90% confidence interval for the difference in the proportions of students who take the subway to school at the two colleges. Round you answer to 3 decimal places. What conclusion can you draw?

Q: In a recent poll, 300 people were asked if they liked dogs, and 54% said they did. Find the Margin…

A: Obtain the margin of error for the poll at the 95% confidence level. The margin of error for the…

Q: Students at a certain college were asked if they have a car. After surveying 823 students, it was…

A: We know that a margin of error tells us how many percentage points our results will differ from the…

Q: In a recent poll, 420 people were asked if they liked dogs, and 9% said they did. Find the Margin of…

A: Given: Sample size=n=420,Number of people who liked dogs:x=420×9100=37.8≈38,Significance…

Q: In a recent poll, 470 people were asked if they liked dogs, and 94% said they did. Find the Margin…

A:

Q: Part a through d please. Thank you!

A: (a) Sample ProportionThe symbol "p̂" represents the sample proportion or the point estimate of the…

Q: In a recent poll, 370 people were asked if they liked dogs, and 69% said they did. Find the Margin…

A:

Q: You and a friend are interested in knowing if two groups have the same proportion of smokers. The…

A: 1. In the given situation, the proportions of two groups are comparing. The suitable test for…

Q: A survey of 700 non-fatal accidents showed that 167 involved uninsured drivers. Construct a 99%…

A: Given data,n=700x=167Point estimate isp=xn=167700=0.2386Construct a 99% confidence interval?

Q: In a survey of 2304 ​adults, 746 say they believe in UFOs.   Construct a 95% confidence interval for…

A: Solution: Let X be the number of adults who believe in UFOs and n be the sample number of adults.…

Q: In a survey of 2263 adults, 742 say they believe in UFOS. Construct a 95% confidence interval for…

A:

Q: In a recent poll, 410 people were asked if they liked dogs, and 24% said they did. Find the Margin…

A: We have to find margin of error.

Q: In a recent poll, 270 people were asked if they liked dogs, and 15% said they did. Find the Margin…

A: given data sample size (n) = 270p^ = 0.1595% ci p, E = ?

Q: Find the Margin of Error for this poll, at the 95% confidence level.

A: It is given that in a recent poll, 210 people were asked if they liked dogs, and 36% said they did.…

Q: You have recently had a debate with a friend about who uses smartphones the most. Your friend…

A:

Q: Q4. You conduct a poll comparing two candidates. In a poll of 400 people, 190 prefer candidate A,…

A: Here, let πA and πB be the true population proportion of the supported people for A and B candidate…

Q: A psychologist is interested in constructing a 99% confidence interval for the proportion of people…

A: a) The critical value of z-statistic for a 99% confidence interval is 2.58 (from the standard normal…

Q: A survey of 26 individuals found that they spent an average of $39.21 on exercise attire for the…

A: Confidence interval is an inference process which is used to estimate the population parameter. The…

Q: Save In a survey of 2348 adults, 728 say they believe in UFOS. Construct a 90% confidence interval…

A:

Q: one city, 79.6% of the 8500 students surveyed said they eat at the school cafeteria. Find the 95%…

A: Given n=8500

Q: In a recent poll, 410 people were asked if they liked dogs, and 32% said they did. Find the Margin…

A:

Q: In a recent poll, 310 people were asked if they liked dogs, and 40% said they did. Find the Margin…

A: Given data: n = 310p⏞ = 40100=0.40C.I = 99%      =0.99Then, calculate αα = 1-0.99   =0.01Now,…

Q: one with a 95% confidence level and the other with a 99.7% confidence level. Which interval is…

A: Confidence interval is probability, which refers that population parameter will fall within set of…

Q: In a recent poll, 260 people were asked if they liked dogs, and 80% said they did. Find the Margin…

A: Given:

Q: In a recent poll, 300 people were asked if they liked dogs, and 71% said they did. Find the Margin…

A:

Q: A 95% confidence interval for the population proportion is (☐☐ ). (Round to three decimal places as…

A: Let p be the population proportion of the adults who believe in UFOs.Given that,Number ofadults No.…

Q: in a recent poll, 130 people were asked if they liked dogs, and 46% said they did. Find the Margin…

A: Introduction: The 100 (1 – α) % confidence interval for the population proportion, p is: Here, n is…

Q: t poll, 240 people were asked if they liked dogs, and 35% said they did. Find the Margin of Error…

A: Given: n = 240 p^=35%=0.35 The value of z at 95% confidence level is 1.96, which can be obtained by…

Q: 6. Explain what this confidence interval means to your boss, who has never taken a statistics class.…

A: What is confidence interval and explain it to non statistics person.

Q: In a survey of 2273 adults, 709 say they believe in UFOs. Construct a 95% confidence interval for…

A: Answer:- Given, Sample size, n = 2273 Number of successes on sample, x = 709Confidence level, C =…

Q: A magazine provided results from a poll of 1000 adults who were asked to identify their favorite…

A: Given Information :  A magazine provided results from a poll of 1000 adults who were asked to…

Q: In a survey of 2291 adults, 743 say they believe in UFOs. Construct a 99% confidence interval for…

A: sample size(n)=2291No. of adults say they believe in UFOs(x)=743

Q: 8. A Rasmussen Reports national survey of 1000 adult Americans found that 18% dread Valentine's Day.…

A: For the given data Select the correct choice

Q: In a recent poll, 490 people were asked if they liked dogs, and 51% said they did. Find the Margin…

A: Given data,n=490p=51%=0.51z-value at 99% confidence is Zc=2.576E=?

Q: Students at a certain college were asked if they have a car. After surveying 601 students, it was…

A:

Q: 1. A university health services physician is concerned about how much sleep freshman are getting.…

A: since parameter is proportion here, we use one same proportion confidence interval.

Q: survey of 2269 ​adults, 701 say they believe in UFOs.   Construct a 95% confidence interval for the…

A:

Q: In a recent poll, 150 people were asked if they like dogs, and 40% said they did. Find the margin of…

A:

Q: ement below is the best explanation? ere is 90% confidence that 21% of the adult citizens of the…

A: Given n=2500 Pcap=0.21 ME=0.044 Alpha=1-0.90=0.10 90% confidence level

Q: In a recent poll, 390 people were asked if they liked dogs, and 33% said they did. Find the Margin…

A: Given p^=Sample proportion=0.33 n=sample size=390 Confidence interval = 99%

Q: In a survey of 2295 ​adults, 746 say they believe in UFOs.   Construct a 90% confidence interval for…

A: Proportion is almost similar to the concept of probability. Proportion is a fraction of population…

Q: In a recent poll, 190 people were asked if they liked dogs, and 81% said they did. Find the Margin…

A:

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.