Of 400 randomly selected medical students, 21 said that they planned to work in a  rural community. Find a 95% confidence interval for the true proportion of all  medical students who plan to work in a rural community.

Q: A psychologist is interested in constructing a 95% confidence interval for the proportion of people…

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Q: If Hugo and Lily use a 99% confidence level (z*score of 2.58), which statement is true? Hugo polled…

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Q: Out of 500 people sampled, 390 had kids. Based on this, construct a 99% confidence interval for the…

A: Find z-critical value: For the two-tail test, Area on each tail. Area to the left of the normal…

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: Suppose that the a college wants to have an idea of the average SAT score of the incoming freshman…

A: The confidence level is 0.90, the standard deviation is 310 and margin of error E is 50.

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

A: n = 3335 p = 0.804

Q: In a sample of 130 adults, 90 had children. Construct a 99% confidence interval for the true…

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

Q: A psychologist is interested in constructing a 95% confidence interval for the proportion of people…

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Q: England-based basketball team NewCastle Eagles wants to match their fans in two distinct countries.…

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Q: Out of a sample of 500 high school students, 376 said they would prefer to have computers in every…

A: Given that x=number of people who prefer to have computers= 376 n=sample size= 500 So the point…

Q: In a survey of 2313 adults, 714 say they believe in UFOs.   Construct a 90% confidence interval for…

A: Given, In a survey of 2313 adults, 714 say they believe in UFOs. n=2313 x=714 Sample proportion:…

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

A: Solution: Given information: n= 746 Sample size  x = 56 Successes  p^=xn=56746= 0.0751    Sample…

Q: A Harris Interactive poll reported that 32.4% of 275 randomly selected Americans living in the west…

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Q: In a recent poll, 290 people were asked if they liked dogs, and 40% said they did. Find the Margin…

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

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

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

A: Given that,x=62,n=813 (a) The sample proportion is, Critical values: By using the standard normal…

Q: Of 380 randomly selected medical students, 21 said that they planned to work in a rural community.…

A:

Q: when 282 college students are randomly selected and surveyed, it is found that 109 own a car. find a…

A: It is given that sample size (n) is 282 and x is 109.

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: 95% confidence interval for the proportion of adults in the United States who say that their…

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Q: In a survey of 1000 randomly selected adults in the US, participants were asked what their most…

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Q: When 328 college students are randomly selected and surveyed, it is found that 122 own a car. Find a…

A: From the provided information, Sample size (n) = 328 122 own a car that is x = 122 Confidence level…

Q: 7 out of 70 students said they were comfortable with “working in a workplace with a lot of…

A: Given that  57 out of 70 students said they were comfortable with “working in a workplace with a lot…

Q: A psychologist is interested in constructing a 95% confidence interval for the proportion of people…

A: Given P=(53/840) =0.06310 95℅ confidence internal Z-score =1.96

Q: A poll of 5000 residents in Brazil, Canada, China, France, Malaysia, South Africa, and the United…

A: From the provided information, Sample size (n) = 5000 805 of the responses, was doctors, nurses, and…

Q: In a recent poll, 270 people were asked if they liked dogs, and 29% said they did. Find the Margin…

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

A: Solution-:  Given: n=705,X=56,α=0.01 We want to find, (a) With 99% confidence the proportion of all…

Q: To construct the confidence interval, the quantity tsm is subtracted from and added to the sample…

A: Given:

Q: Of the 1,000 people, 550 people used company s's smartphone and 460 people used company a's…

A: Given: n= 1000 ,x= 550.0 At 95.0 % confidence level , z score= 1.96 Need to find confidence…

Q: Suppose a random sample of 459 married couples found that 307 had two or more personality…

A: Introduction - Confidence interval for two proportion CI=Sample difference ±critical difference…

Q: If n=260 and X = 208, construct a 95% confidence interval. Give your answers to three decimals __…

A: Solution: From the given information, X=208, n=260 and the confidence level is 0.95. The sample…

Q: If a 90%, a 95% and a 99% confidence interval are foung for a population mean, describe how the 3…

A: Population mean CI for known population standard deviation is, CI=x¯±Zσnwhere,σ=population standard…

Q: f 260 employees selected randomly from one company, 18.46% of them commute by carpooling. Construct…

A: Given data, n=260 p=18.46% =0.1846 z-value at 98% confidence is Zc=2.326

Q: If n=400 and X=100​, construct a 99​% confidence interval estimate for the population proportion

A: According to the given information, we have n = 400 X = 100 Confidence level = 99%

Q: The mean was found to be 25% and the confidence interval was (20.4%,29.6%) therefore the margin of…

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Q: In the past, 70% of a garage's business was with former patrons. Clarence Wade, the owner of the…

A: Solution: Given information: n= 600 Sample size  x = 432 Successes  p^=xn=432600= 0.72 Sample…

Q: In a sample of 470 adults, 306 had children. Construct a 99% confidence interval for the true…

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Q: A psychologist is interested in constructing a 95% confidence interval for the proportion of people…

A: Given,n=725x=68p^=xnp^=68725=0.09381-p^=1-0.0938=0.9062α=1-0.95=0.05α2=0.025Z0.025=1.96    (from…

Q: A psychologist is interested in constructing a 90% confidence interval for the proportion of people…

A: Solution: Let X be the number of people accept the theory that a person’s spirit is no more than the…

Q: Many high school students take the AP tests in different subject areas.  In 2007, of the 144,796…

A: It is given that x1=84,199, n1=144,796, x2=102,598, n2=211,693.

Q: Estimate the 95% confidence interval for the proportion of iPhone (Apple Inc.) users in your sample…

A: Obtain the 95% confidence interval for the proportion of iPhone (Apple Inc.) users.   The 95%…

Q: In a sample of 570 adults, 485 had children. Construct a 95% confidence interval for the true…

A: The sample size is 570. The number of successes is 485. We have to construct 95% confidence interval…

Q: A survey of 360 college seniors found that 305 wish they had spent more time studying. Find a 94%…

A: Givensample size(n)=360x=305p^=xn=305360=0.8472confidence interval = 94%

Q: Through polling, it was estimated that the percent of people who will vote for a particular…

A: Given information Percentage of people who will vote in a upcoming election p-hat = 36.2% Margin of…

Q: In a sample of 510 adults, 464 had children. Construct a 95% confidence interval for the true…

A: Given that in a sample of 510 adults, 464 had children. 95% confidence level

Q: previous election, the confidence interval for the proportion of likely voters who would vote for…

A:

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

A: The sample of 380 randomly selected medical students in which 210 said that they planned to work in…

Q: survey of 300 union members in New York State reveals that 112 favor the Republican candidate for…

A: The sample proportion of  union members who favor the Republican candidate in a sample of 300…

Q: Of 375 randomly selected students, 30 said that they planned to work in a rural community. Find 95%…

A: Using z ditribution to construct the interval.