Out of 100 people sampled, 16 have tried marijuana. Based on this, construct a 95% confidence interval for the true population proportion of people who have tried marijuana. Give your answers as decimals, to three places

Q: The confidence interval was (52, 62) What was the point estimate? What was the margin of error?…

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Q: In a survey of 2279 ​adults, 729 say they believe in UFOs. Construct a 90% confidence…

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Q: Find the margin of error E that corresponds to the given statistics and confidence level.…

A: From the provided information, Confidence level = 98% Sample size (n) = 900 Success (p̂) = 0.40

Q: In a random sample of 145 UNO students, we find that 53% have attended a Maverick hockey game at…

A:

Q: In a survey, the planning value for the population proportion is .25. How large a sample should be…

A: Solution: It is given that the planning value for the population proportion is 0.25. The confidence…

Q: In each of Exercises, use the one-proportion plus-four z-interval procedure to find the required…

A:

Q: survey​ asked, "How many tattoos do you currently have on your​ body?" Of the 1211 males​surveyed,…

A: We have to create 99% confidence interval for difference in proportion and we have to find if…

Q: The County Development Agency does a survey of all the mobile home manufacturers in Clarion County…

A: X̄ = $13,550, σ = $2,000, n = 25,

Q: 4a) A survey asked users of Facebook, “Do you believe Facebook should be able to collect user's data…

A: a) The sample proportion is computed as follows, The value of z at 95% confidence level is 1.96,…

Q: Campus athletics is interested in the proportion of registered students living on campus who play…

A: The 95% confidence interval is (0.12, 0.18).

Q: We would like to know: "What percentage of college students read the college newspaper every day?"…

A: It is provided that there is random sample of 500 college students in which 231 students said that…

Q: Out of 300 people sampled, 273 had kids. Based on this, construct a 99% confidence interval for the…

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Q: According to a Gallup Poll taken in East Germany, when adults were asked whether they were thriving,…

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Q: Out of 500 people sampled, 250 had kids.The best point estimate for p is? The margin of error for a…

A: Given Information: Out of 500 people sampled, 250 had kids. n = 500, x = 250 Point estimate for…

Q: Construct a 95​% confidence interval of the population proportion using the given information.…

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Q: In a survey, the planning value for the population proportion is . How large a sample should be…

A: Let, Proportion =p Margin of error=E CI is =Zc n=?

Q: ccording to the data, calculate a 90% confidence interval for the sample mean. What was the T Score…

A: Solution: n= 30 Sample size ∑xi=642 x=∑xin=64230=21.4 Sample mean s2=∑(xi-x)2n-1=56.52414 Sample…

Q: Use the given confidence interval to find the margin of error and the sample proportion. (0.741,0…

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Q: A survey of 385 people found that 114 graduated college. Which of the following is a 90% confidence…

A: Given X=114 n=385 90% confidence interval for proportion  Zc=1.645  , at alpha=0.10 p=X/n

Q: The principal randomly selected six students to take an aptitude test. Their scores were:…

A: The sample mean and standard deviation are, The degree of freedom is, df=n-1   =6-1   =5

Q: In a survey of 4061 ​adults, 738 say they have seen a ghost. Construct a​ 99% confidence interval…

A: In this question, it has been given that 738 people out of 4061 people have seen the ghost, we have…

Q: In a four-year psychedelic-mushroom experiment, 93 of the 300 subjects reported experiencing “strong…

A: Given information- We have given that 93 of the 300 subjects reported experiencing “strong or…

Q: 5-Seventy percent of 50 randomly selected students from college of science and engineering were…

A:

Q: Construct a confidence interval of the population proportion at the given level of confidence. X =…

A:

Q: The Pew Social Media Update 2014 surveyed 1,597 adult internet users on which social media websites…

A: Number of users (n) = 1597 Number of  users who use Facebook (x) = 1134 Find the sample proportion:…

Q: In a survey of 1000 people, 850 said they would not to travel to Disney World this summer. Construct…

A: Given: n=1000 and x=850 Then,p^=xn=8501000=0.85

Q: Use the given confidence interval to find the margin of error and the sample proportion.…

A: The confidence interval is CI = (0.589,0.619) CI = (LB,UB)

Q: Use the given confidence interval to find the margin of error.and the sample proportion.…

A: Given, Confidence interval (0.741, 0.767) Upper limit U = 0.767 Lower limit L = 0.741

Q: use the given sample data and confidence level. In each case, (a) find the best point estimate of…

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Q: Use the given degree of confidence and sample data to construct a confidence interval for the…

A: It is given that n=195 and x=162. The sample proportion is 162/195 = 0.8308 The sample size is 195…

Q: A research institute poll asked respondents if they felt vulnerable to identify a theft. In the poll…

A: Given,n=1000x=501p^=xnp^=5011000=0.5011-p^=1-0.501=0.499α=1-0.99=0.01α2=0.005Z0.005=2.58    (from…

Q: of 100 people sampled, 50 had kids. The best point estimate for p is. The margin of error for a 90%…

A:

Q: Find 90% confidence interval for the true proportion of all medical students who plan to work in a…

A: Given : Sample Size, n = 300 Number of successes, x = 30

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: Refer to the accompanying data set of 20 randomly selected presidents. Treat the data as a sample…

A: Given that,

Q: A survey asked, "How many tattoos do you currently have on your body?" Of the 1247 males surveyed,…

A: From the provided information,

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

A: Given : n = 1000 X = 600

Q: Construct a confidence interval for the population proportion p. n ? 144, x ? 86, 90% confidence

A: Given: Confidence level = 0.90 Sample size (n) = 144 x = 86 Sample proportion p^=xn=86144

Q: The principal randomly selected six students to take an aptitude test. Their scores were: 88.0 84.1…

A: Solution: Let X be the score. The given data is 88, 84.1, 74.9, 83.2, 83.7 and 85.5.

Q: identify the population proportion, the value of margin of error E, and construct the confidence…

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Q: For each confidence interval procedure, provide the confidence level. (Round the answers to the…

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Q: A website for car reviewssurveyeda random sample of 102car owners, and21wished they would have…

A:

Q: A survey asked, "How many tattoos do you currently have on your body? Of the 1204 males surveyed.…

A: Followings are the Explanation of the question

Q: Use the given degree of confidence and sample data to construct a confidence interval for the…

A: Given : Sample Size, n = 316 Number of successes, x = 112 confidence level,c=0.99…

Q: The principal randomly selected six students to take an aptitude test. Their scores were: 88.0 84.1…

A: Given, Scores: 88.0, 84.1, 74.9, 83.2, 83.7, 85.5  Sample Size (n) =6

Q: In each of Exercises, use the one-proportion plus-four z-interval procedure to find the required…

A: In a survey, 836 out of 929online adults who are 18-29 years old said that they use social…

Q: Find the margin of error for the given confidence level and values of x and n. x = 111, n = 194,…

A:

Q: Out of 300 people sampled, 78 had kids. Based on this, construct a 99% confidence interval for the…

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Q: In a recent poll, 400 people were asked if they liked dogs, and 30% said they did. Find the margin…

A: Given: n =400 p=0.30 The value of z at a 99% confidence level is 2.58, which can be obtained by…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.