In a harvard Schol of public health survey, 2105 of 10,904 randomly selected US college students were classified as abstainers(nondrinkers).   a) Construct and interpret a 99% confidence interval for p. Use the four-step process or PANIC. b) A newspaper article claims that 25% of US college students are nondrinkers. Use your result from (a) to comment on this claim.

Q: Thirteen out of the 137 randomly selected faculty members who were surveyed at a community college…

A: Obtain the 90% confidence interval for the proportion of all faculty member at the community college…

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

Q: In a survey conducted by a website, employers were asked if they had ever sent an employee home…

A: From given data we have : n=2769 x=978 The claim is more than one-third of employers have sent and…

Q: A board-game club meets each week at the local library. People bring different board games to play,…

A:

Q: In his book, "The Signal and the Noise," Nate Silver analyzed 733 predictions made by experts…

A: As per our guidelines we are supposed to answer only 3 sub-parts of any one question Hence I am…

Q: A survey of 225 randomly chosen commuters are asked if they support an expanded public…

A:

Q: A magazine reported that 47% of Canadians are confident they will take a winter vacation at some…

A: Given that  Sample size n =65 Favorable cases x =27 Sample proportion p^=x/n  =27/65 =0.4154 NOTE:-…

Q: A used car dealer claims that the median cost of a used car is $12,000. In a random sample of 15…

A: Given median cost of a used car = $12000Total number of used cars in sample = n = 15Total number of…

Q: In a survey conducted by a website, employers were asked if they had ever sent an employee home…

A: Sample size, n=2765 Number of successes, x=964

Q: The article “Facebook Use and Academic Performance Among College Students” estimated that 87% of…

A:

Q: Past studies have indicated that the percentage of smokers was estimated to be about 35%. Given the…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: In another Harris poll, adults were asked if they are in favor of abolishing the penny. Among 200…

A: From the given information,                        Sample size (n) =200 Probability of success…

Q: A sample of 2010 adults were asked in 1990 whether they smoked (yes or no). This same sample was…

A: The appropriate test is chi-square test. Decision Rule: If test statistic is larger than critical…

Q: 3) Prior to the 2013 BCS National Championship Game between Notre Dame and Alabama, a poll asking…

A: 3) The sample proportion of all college students who said Alabama would win is,…

Q: 6)a) The National Association of Colleges and Employers sponsors the Graduating Student and Alumni…

A: The sample proportion is given by p = 845/1523 = 0.555 n = 1523

Q: As customer satisfaction manager for a large utilities company, you randomly select 200 customer…

A: We have given that n = 200 x = 21 Confidence level (c) = 95% = 0.95

Q: survey was taken of randomly selected​ Americans, age 65 and​ older, which found that 418 of 1020…

A: As per the guideline, I can solve only the first 3 subparts . Kindly repost the remaining parts.…

Q: A survey was taken of randomly selected​ Americans, age 65 and​ older, which found that 401 of 1018…

A: Introduction: Denote p1, p2 as the true population proportions of women and men in Country A who…

Q: A poll asked whether states should be allowed to conduct random drug tests on elected officials. Of…

A: n = 21410 p^ = 0.72 99% ci for p

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

A:

Q: Ten engineering schools in the United States were surveyed. The sample contained 250 electrical…

A: Given that  n1=250 , X1=80 , n2=175 , X2=40

Q: 19% of deaths among male adults can be attributed to heart diseases. Is this percentage different…

A: Solution: It is given that 19% of deaths among male students can be attributed to heart diseases.

Q: A study was conducted to determine the proportion of people who dream in black and white instead of…

A: The random variable X follows binomial distribution. We have to use normal approximation to binomial…

Q: A survey of 225 randomly chosen commuters are asked if they support an expanded public…

A:

Q: A headline in USA Today proclaimed "Men and Women are equal talkers. Given below are the results of…

A: a)To test:H0:μ1=μ2H1:μ1≠μ2

Q: QUESTION #2. In a Harris poll, adults were asked if they are in favor of abolishing the penny. Among…

A:

Q: In a Gallup poll of 557 randomly selected adults, 284 said that they were underpaid. a) Identify the…

A:

Q: USA Today (Feb. 17, 2011) described a survey of 1,008 American adults. One question on the survey…

A: a) The sample proportion is p-cap = 205/1008           = 0.203 b) The population proportion p is…

Q: An endangered species of bird, the whooping crane, has an average egg weight of 208 grams. A…

A:

Q: According to the Center of Disease Control and Prevention (CDC), 18% of adults in the U.S. over 19…

A: The p-value is 0.0073.

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: Past studies have indicated that the percentage of smokers was estimated to be about 30%. Given the…

A: The population proportion of smokers is denoted by p. The claim is “The percentage of smokers has…

Q: A study was conducted to determine the proportion of people who dream in black and white instead of…

A:

Q: A study investigated various aspects of drug use among pregnant women: With 95% Confidence,…

A:

Q: In a survey on the death penalty, a Gallup Poll asked 327 randomly sampled adults whether they…

A:

Q: On April 15th, 1912, the R.M.S. Titanic sank into the North Atlantic Ocean, resulting in the loss of…

A: Given, The proportion of survivors by each class here is computed as: p(crew) = 212 / 885 =…

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

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.