Construct a 95​% confidence interval. Express the percentages in decimal form.   enter your response here

Q: A drug is used to help prevent blood clots in certain patients. In clinical​ trials, among 4284…

A: The question is about confidence intervalGiven :Total no. of patients who were treated with the drug…

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Q: What set of factors would produce the narrowest confidence interval for estimating a poulation mean?…

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Q: joint USA Today/CNN/Gallup Poll in July 2020 indicated that of 832 white adults, 46% thought…

A: Given n=832 P=0.46

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Q: 5. Attending sporting events is a popular source of entertainment. When 1000 people were surveyed,…

A: Given that 1000 people were surveyed. Therefore the sample size is  n=1000 After survey it is found…

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Q: Practice. Testing a vaccine for HIV. Of 8198 subjects given a placebo, 74 became infected with HIV,…

A: (a)Given that,sample one, x1 =74, n1 =8198, p1= x1/n1=0.009sample two, x2 =51, n2 =8197, p2=…

Q: 1. A survey of 224 children of ages 9 to 17 was conducted shortly after 1986 space-shuttle disaster.…

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Q: 1. Your colleague collected a sample of data regarding the mean length of a movie and they computed…

A: It has been given that the confidence interval of the mean length of a movie has been computed on a…

Q: Write a sentence demonstrating how the results from the hypothesis test and the confidence interval…

A: From the results, the 90% confidence interval to estimate the mean exam score is (68.6670, 75.7331).

Q: 1. In a recent poll 62 out of 149 randomly chosen students at Allen High School say they plan to buy…

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Q: Use the technology of your choice to obtain the required Tukey multiple-comparison confidence…

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Q: A national poll found that 684 people out of 1100 believe in UFO’s. Answer the following questions.…

A: Given data,Number of people n=1100People who believe in UFO is x=684Find the 94% confidence interval

Q: In a survey of 3,873 adults concerning complaints about restaurants, 1,534 complained about dirty or…

A: b) Given data, n=3873 Loud or distracting diners x=1187 sample proportion p=x/n=1187/3873=0.3065…

Q: You own an icecream shop in Bay City, and you are interested in estimating how many icecreams sold.…

A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are…

Q: A study of 420,078 cell phone users found that 132 of them developed cancer of the brain or nervous…

A: given that,possible chances (x)=132size(n)=420078success rate ( p )= x/n = 0.000314point of estimate…

Q: A SURVEY WAS CONDUCTED IN 2010 AND 2020. THE 2010 RESULTS SUMMARIZED THE RESPONSI WHEREAS THE…

A: The given table is HEALTH ISSUE 2010 SURVEY 2020 SURVEY ATE RECOMMEND AMOUNT OF FIBROUS…

Q: Construct a 99% confidence interval to assess whether this represents evidence that parents'…

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Q: Several years ago, 42% of parents who had children in grades K-12 were satisfied with the quality of…

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Q: Family Closeness. A study conducted among college students evaluated the connection between drug use…

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Q: GROUP 2 You work for a consumer advocate ogency and want to find the mean repair cost of a washing…

A: According to the provided information, Mean (x̅) = 100 Standard deviation (σ) = 17.50 Sample size…

Q: An economist at the Florida Department of Labor and Employment needs to estimate the unemployment…

A: An economist at the Florida Department of Labor and Employment needs to estimate the unemployment…

Q: 1. In a recent study, the researchers want to find the information about the percentage of adults…

A: Given datan = 3026proportion of people who prefer to get their news online = 0.38

Q: All patients admitted to a particular hospital can be released on the same day or kept overnight for…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: 3.1 Construct a 95% confidence interval for the proportion of South Africans who avoided fat in…

A: From given data we have : for 2010 survey sample size=n1=1250 Proportion (Avoided fat)=p^1=0.55 for…

Q: Ten students on a low-fat diet designed to lower their cholesterol and recorded their before and…

A: Let X represents the cholesterol level before diet and Y represents the cholesterol level after…

Q: A SURVEY WAS CONDUCTED IN 2010 AND 2020. THE 2010 RESULTS SUMMARIZED THE RESPONSES OF 1250…

A: Confidence interval are used to measure the range where the population proportion lies. It is…

Q: A researcher examined the extent of cooperation among kindergarten children. She unobtrusively…

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Q: b. Write the equation of the line of best fit. c. Predict the final grade given eight absences.…

A: The provided information is  Number of absences ((x) Final Grade (y) xy x2 0 97 0 0 1 97 97 1…

Q: In a past presidential​ election, 37,979,113 people voted for Candidate​ A 37,758,117 for Candidate​…

A: a. In the past presidential​ election, 37,979,113 people voted for Candidate​ A; 37,758,117 for…

Q: Do more than 50% of U.S. adults feel they get enough sleep? According to Gallup's December 2004…

A: Sample size =1003 Number of US adults surveyed said that get enough sleep =552  We have to find the…

Q: Example:  You would like to construct a 90% confidence interval for the proportion of graduating…

A: Obtain the value of the point estimate. The value of the point estimate is obtained below: Thus,…

Q: A university dean is interested in determining the proportion of students who receive some financial…

A: Given :-   randomly selects 200 students and finds that 118 of them are receiving financial aid…

Q: Use the sample data and confidence level given below to complete parts (a) through (d). In a study…

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Q: The Vegetarian Resource Group commissioned Harris Poll in 2016 to conduct a nationally…

A: The random variable vegetarian follows binomial distribution. X ~ B (n, p) => X ~ B (2015,…

Q: PROBLEM: A psychologist asks a random sample of 30 female adolescents and a separate, random sample…

A: Given:   Case Female Male 1 5.2 5 2 4.5 4.4 3 6.4 6.4 4 4.5 4.9 5 8.1 3.6 6 5.6 5.1…

Q: 3. The Pew Internet and American Life Project conducted a poll between Oct 23 and Nov 19, 2006, in…

A: Given information X = 598, Sample size (n) = 935

Q: A quality-conscious disk manufacturer wishes to know the fraction of disks his company makes which…

A: From the provided information, Sample size of floppy disks (n) = 542 Number of defective disk (x) =…

Q: I sampled 10 downtown Chicago restaurants for the price of their most expensive meal on the menu.…

A: Given data is 45,80,70,70,60,65,80,60,50,90