In a random sample of 500 people eating lunch at a cafeteria on various Fridays, it was found that 160 preferred seafood. A 99% confidence interval for the actual proportion of people eating seafood on Fridays (rounded off to two decimals) i

Q: In a survey of 500 potential jurors, one study found that 350 were regular watchers of at least one…

A: It is given that sample size (n) is 500 and x is 350.

Q: A random sample of 120 adults showed that 42 are already fully vaccinated. Give a 95% confidence…

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Q: A survey of 540 depressed shoppers found at 32% of them shop on impulse. What is the 99% confidence…

A: Given : Sample Size, n = 540 confidence level,c=0.99 Significance level, α…

Q: In a sample of 100,40 said they preferred Pepsi to Coke. A 95% confidence interval for the…

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Q: In a recent poll, 280 people were asked if they liked dogs, and 51% said they did. Find the margin…

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Q: In a recent poll, 340 people were asked if they liked dogs, and 31% said they did. Find the margin…

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Q: In a recent poll, 500 people were asked if they liked dogs, and 92% said they did. Find the margin…

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Q: In a recent poll, 550 people were asked if they liked dogs, and 10% said they did. Find the margin…

A: Givensample size(n)=550p^=10%=0.10confidence level=99%

Q: In a recent Dew Research Poll, 500 U.S. adults were asked about their online versus in-store clothes…

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Q: In a recent poll, 260 people were asked if they liked dogs, and 13% said they did. Find the margin…

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Q: A magazine reports survey results of 600 randomly selected adults bystating that: “65% of those…

A: From the given information, Sample size (n) = 600 Probability that favor gun control (p) =0.65…

Q: Suppose in a recent poll of 1250 randomly selected Californians who took vacations, 132 of them…

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Q: In a random sample of 500 people eating lunchbat a cafeteria on various fridays, it was found that…

A: Given X=160 n=500 P=X/n

Q: Find the 95% confidence interval for the mean score of all such subjects. Round to one decimal…

A: Given : n=27 , X-bar=76.2  , s=21.4  , α=0.05 Since , the population standard deviation (σ) is…

Q: In a random sample of 500 people eating lunch at a cafeteria on various Fridays, it was found that…

A: Given that Sample size n= 500  Favorable cases x=160 Sample proportion p^=x/n

Q: In a sample of 100, 40 said they preferred Pepsi to coke. A 95% confidence interval for the…

A:

Q: A Gallup Youth Survey in 2001 found that of 501 randomly selected teenagers in the U.S., 271 of them…

A: Given Total number of teenagers selected = 501Number of teenagers said who get along with their…

Q: In a recent poll, 500 people were asked if they liked dogs, and 54% said they did. Find the margin…

A: Here we need to find the Margin of error corresponding to 95% confidence level.

Q: In a recent poll, 600 people were asked if they liked dogs, and 58% said they did. Find the margin…

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Q: 1. A Pew Poll conducted in 2013 surveyed a random sample of 200 adult Americans and 36 of them said…

A: Note- Since you have posted multiple questions, as per our guidelines we are supposed to answer only…

Q: Seventy-three percent of a sample of 1000 students drive a used car as opposed to a new car or no…

A: Given: Proportion  = 73 % Confidence level  = 80 %

Q: In a recent poll, 300 people were asked if they liked dogs, and 73% said they did. Find the margin…

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Q: In a recent poll, 260 people were asked if they liked dogs, and 32% said they did. Find the margin…

A: Find z-critical value:…

Q: 9. A survey found that out of 900 workers, 150 said they were interrupted by frank phone calls. Find…

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Q: In a sports poll, 142 of 500 randomly selected Americans indicated that they consider themselves to…

A: Given that, In a sports poll, 142 of 500 randomly selected Americans indicated that they consider…

Q: How effective is gastric bypass surgery in maintaining weight loss in extremely obese people? A…

A: Given information No of subjects who had received gastric bypass surgery (n) = 426 Proportion of…

Q: You drop by your local independent coffee shop on your way to class. While standing in​ line, you…

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Q: Alma is estimating the proportion of students in her school district who, in the past month, read at…

A: From the given information, n=50 and x = 32.

Q: In a sample of 600 Ottawa families, it is found that 360 rent their dwellings while 240 own their…

A: It is given that sample size (n) is 360 and x is 240.

Q: In a recent poll, 170 people were asked if they liked dogs, and 24% said they did. Find the margin…

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Q: In a recent survey of 500 teenagers, 18.6% indicated that they had eaten junk food while watching TV…

A: Given Data: p^=0.186n=500

Q: 1. A recent survey showed that from a sample of 500 packages delivered by a Postal Service, 480 were…

A: We have given that  Sample size n= 500 , favorable cases x=480 Sample proportion p^=x/n=…

Q: In a survey funded by the University of Washington School of Medicine, 288 of 1,200 adult Seattle…

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Q: A poll commissioned by the Center on Addiction and Substance Abuse at Columbia University found that…

A: Given that, X = 1340 N = 2000 98% confidence level

Q: In a random sample of 200 females and 100 males who watched a certain television program, 94 females…

A: For Females : Out of 200 females , X = 94 females indicated they like it Sample proportion 1 =…

Q: In a recent poll, 150 people were asked if they liked olives, and 23% said they did. Find the margin…

A: Given: n=150 p=0.23 α=0.1

Q: A survey of 80 recent arcanum students showed that 46 were ready for summer break. Find the 95%…

A: Obtain the 95% confidence interval for the true proportion of students ready for summer break. The…

Q: In a recent survey of US adults, 50 people were asked the question:   “Do you use a ride sharing…

A:

Q: In a preelection poll, a pollster finds that 442 out of 650 people polled favor Smith. Construct the…

A: We need to construct the 95% confidence interval for the population proportion. We have given the…

Q: Based upon the results of the sample in #1, can you say with 95% confidence that your confidence…

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Q: In a certain state, a survey of 500 workers showed that 38% belonged to a union.  Find the 93%…

A: Computation of critical value: 1-α=0.93α=0.07α2=0.0351-α2=0.965 The critical value of z-distribution…

Q: In a recent poll, 500 people were asked if they liked dogs, and 94% said they did. Find the margin…

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Q: In a recent poll, 500 people were asked if they liked dogs, and 72% said they did. Find the margin…

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Q: In a recent poll, 100 people were asked if they liked dogs, and 90% said they did. Find the margin…

A: Obtain the margin of error at the 95% confidence level. The margin of error is obtained below as…

Q: A survey of 800 women shoppers found that 17% of them shop on impulse. what is 98% confidence…

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

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Q: An airline transports over 10 000 passengers daily, and the airline is curious what proportion of…

A: Critical value: Using Excel formula "=NORM.S.INV(1-(0.1/2))", the z-value is obtained as 1.645.

Q: In a recent poll, 210 people were asked if they liked dogs, and 59% said they did. Find the margin…

A: Find z-critical value:…