11) In a Gallup poll, 1011 adults were asked if they consume alcoholic beverages and 64% of them said that they did. Construct a 90% confidence interval estimate of the proportion of all adults who consume alcoholic beverages. Can we safely conclude that the majority of adults consume alcoholic beverages?

Q: 12. In a sample of 600 Canadians, 265 say they would rather retire in the US than in Canada.…

A:

Q: Suppose a consumer advocacy group wants to conduct a survey to find if the proportion of consumers…

A:

Q: In a survey of 3005 adults aged 57 through 85 years, it was found that 81.7% of them used at least…

A: Given :  n = 3005 p̂=0.817

Q: 1. Do Black and White Americans have the same average income? 2. Do Males and Females have the same…

A: 1. From the given output (2nd output) it can be observed that the confidence interval of the…

Q: 5.From a sample of 1,000 college students, 28% watch the Super Bowl game each year. Find the margin…

A:

Q: 3. A survey of 2,950 Filipinos showed that 2,655 trust the Supreme Court decisions on legal issues.…

A: Let X be the number of trust the supreme court decision on legal issues  n be the sample size  Given…

Q: 2. A nutritionist wants to know the population proportion of Grade 1 learners who eat vegetables.…

A: We have given thatn = 1200x = 200p̂ = x/n = 200/1200 = 0.167Significance level (α) = 1 - 0.95 = 0.05

Q: 4. 14 out of 20 voters in Pennsylvania reported having voted for an independent candidate. It is…

A: Critical Value: In a test of hypotheses, Critical Values are the cut-off values that provide the…

Q: suppose that we want a 95% confidence interval for π = proportion of defectives if we observe 4…

A: Given that, there are 4 defectives in 60 items tested. n=60 and x=4 Proportion of defective is given…

Q: In September 2011, Gallup surveyed 1,004 American adults and asked them whether they blamed Barack…

A: (1) Given that,

Q: If a 0.10 significance level is to be used to test the claim that  p 1 less thanp 2​, what…

A: Provided that the level of significance is α=0.10.  Let p1 and p2 denote the population proportion…

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

A:

Q: How did the decisions from the hypothesis ?compare to whether or not the 95% or the 99% confidence…

A: Given: The null hypothesis has been rejected at 5% significance level. The null hypothesis has not…

Q: In a survey with human resources managers, 71% of respondents thought they should hire new staff…

A: Given information: Denote the population proportion of all respondents who thought that they should…

Q: When a recent survey asked subjects whether it should or should not be the​ government's…

A: The total number of subjects that is sample size (n) = 1496The number of subjects who said yes that…

Q: 1. Suppose survey results say that 69% of the adult females from a sample taken in the United States…

A: Proportion (p) = 69 %  Margin of Error (E) = 3%  Alpha = 95%  FIRSTLY calculate the confidence…

Q: 9. The Centers for Disease Control and Prevention reported a survey of randomly selected Americans…

A:

Q: Suppose we want to estimate the proportion of teenagers (aged 13-18) who are lactose intolerant. If…

A: According to the provided information, The z score at 95% confidence interval from the standard…

Q: In the Framingham Offspring study 3630 subjects were on anti-hypertensive medication out of 4657…

A: Note: Hi, thank you for the question. As per our company guideline we are supposed to answer only…

Q: 1. The Hartford Insurance Company wants to estimate the percentage of drivers who change tapes or…

A: Please see the attachment..

Q: In a survey of 3473 adults aged 57 through 85​ years, it was found that 84.6% of them used at least…

A:

Q: Suppose you are planning to construct a 23% confidence interval for a one sample population…

A: We have given that confidence level (c) = 23% = 0.23

Q: In a poll of 2,500 likely voters, 966 say that the Philippines spend too little on education. Find…

A: Ans- Given the level of confidence interval   90 %                                        Then   α =…

Q: 2. In a survey of 3005 adults aged 57 through 85 years, it was found that 81.7% of them used at…

A: Hey, since there are multiple subparts posted, we will answer first three subparts. If you want any…

Q: It was observed that 30 of the 100 randomly selected students smoked. Find the confidence interval…

A: It is given that, 30 out of 100 randomly selected students smoked i.e. proportion of the student who…

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: In a two-sided confidence interval involving two groups, when the signs of its lower and upper…

A: Confidence interval is an inference process which is used to estimate the population parameters…

Q: What does the 95% represent in a 95% confidence interval

A: Solution CI=95%

Q: 2. In a survey of 1024 US adults, 287 said that their favorite sport to watch is football. a. Find a…

A: It is given that the survey contains 1024 US adults and the number of US adults who favorite sport…

Q: Suppose we would like to estimate the proportion of all NBA fans who thought Aaron Gordon won the…

A:

Q: 1. Give a 90% confidence interval for the mean posttest score for all BACC students 2. Find a 95%…

A: The 90% CI is given by ​​​​​​​

Q: 1. How can you make a 95% confidence interval smaller without changing the confidence level?

A: Confidence interval is an interval such that the probability of the unknown parameter to be included…

Q: 1. In a poll of 2,500 likely voters, 966 say that the Philippines spend too little on education.…

A:

Q: ) In a Gallup poll, 1011 adults were asked if they consume alcoholic beverages and 64% of them said…

A: 11. Given information: The sample size is 1011 adults. 64% of them said that they did. That is,…

Q: In a sample of 95 recommendations, it is found that 56% of them made money. Determine the upper…

A: Proportion is almost similar to the concept of probability. Proportion is a fraction of population…

Q: Suppose that a safety group surveyed 1,200 drivers. Among those​ surveyed,78​% said that careless or…

A: Obtain the 99% confidence interval estimate for the true proportion in the population of all drivers…

Q: b. Construct a 90% confidence interval for the percentage of all judges who are in favor of the…

A: a. A random sample of 15 judges and asked them whether or not they favor the death penalty in which…

Q: A college administrator is interested in determining the proportion of students who receive some…

A:

Q: (a) The minimum sample size required to construct a 90% confidence interval is students. (Round up…

A: a) The given Data : Required margin of error = 1.31.3  Population standard deviation σ\sigma =…

Q: consider a random sample of 300 students in a university, 75 of them declared that they like playing…

A: A random sample of 300 students in a university in which 75 of them declared that they like playing…

Q: Construct a 99% confidence interval for the true proportion of all car license applications that…

A: Given Information:x=25n=155c=99%=0.99

Q: What two conditions will result in the use of the student-t distribution when constructing a…

A: Confidence interval for mean: When the sample size is large (n>30) and population variance (or…

Q: In a poll of 2,300 likely voters, 966 say that the Philippines spend too little on education. Find…

A: We have given that the sample size n = 2300, favourable cases X =966 and sample proportion p =…

Q: 1. Construct a 90% confidence interval for the proportion of employees requiring size 3.

A: here given  A civil engineering firm issues every new employee with a safety helmet. Four different…

Q: If a retailer would like to estimate the proportion of their customers who bought an item after…

A: Solution: 3. From the given information, confidence level is 0.90 and E=0.03.

Q: 2. A sample of 430 business applications included 150 men. Find the 99% confidence interval of the…

A: Answer:-  Given,  X=150 n=430

Q: 2. A survey found that out of 900 workers, 150 said that they were interrupted by frank phone calls.…

A: In question, We have given the number of favorable cases 150 and sample size 900 then we'll find 95%…