A recent survey on people’s opinion as to whether the traditional TV licence should be replaced by a device independent broadcasting fee showed that out of a random sample of 115 individuals from the population, 46 of them stated were in favour, i.e. a sample proportion of 0.40. Which of the following is a 99% confidence interval for the true proportion of the adult Irish population that support the new fee structure? (a) 0.4±0.0895 (b) 0.2821 < p < 0.5179 (c) 0.3105 < p < 0.4895 (d) 0.3246 < p < 0.4754 (e) 0.3269 < p < 0.4731 (f) 46±0.1179

Q: A sociologist is interested in surveying workers in computer-related jobs to estimate the proportion…

A:

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: Calculate the 95% and 99% population proportion confidence intervals for this finding.

A: Answer: Given that  the random sample of 100 people  n=100  r=74 The test statistics for population…

Q: Mrs. Voorhees claims that a Bowie knife is the most effective method of disposing rowdy campers. In…

A:

Q: A random sample of residents in city J were surveyed about whether they supported raising taxes to…

A: Given that, A random sample of residents in city J were surveyed about whether they supported…

Q: he drug Viagra became available in the U.S. in May 1988, in the wake of an advertising campaign that…

A: a).

Q: A May 2000 Gallup poll found that 38% of a random sample of 1012 adults in the United States said…

A: (a)   Obtain the 96% confidence interval to estimate the true proportion of all U. S. adults who…

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

A:

Q: In one of the studies, it was found that, in a random sample of 261 married persons, 135 were…

A:

Q: The Pew Forum on Religion and Public Life reported on Dec. 9, 2009, that in a survey of 2003…

A:

Q: In a recent questionnaire about home ownership, a random sample of 545 homeowners were asked about…

A: A random sample of 545 homeowners were asked about the rate of mortgage, whether that is fixed or…

Q: Given that you have a sample size of 10 different soda pops, with a sample mean of 2.228 and a…

A: From the provided information, Sample size (n) = 10 Sample mean (x̅) = 2.228 Sample standard…

Q: A New York Times/CBS News Poll asked a random sample of U.S. adults the question “Do you favor an…

A: From the provided information, Confidence level = 95% Confidence limit = (0.63, 0.69)

Q: in recent poll of 900 randomly selected high school athletes, 86% said they regularly workout on the…

A:

Q: A random sample of 240 adults over the age of 40 found that 144 would use an online dating service.…

A:

Q: The production manager in an automobile plant is concerned with the number of cars that do not pass…

A:

Q: In the past, 44% of those taking a public accounting qualifying exam have passed the exam on their…

A: Denote p as the true proportion of individuals to pass the exam on first try.

Q: In monitoring lead in the air after the explosion at the battery factory, it is found that the…

A: Assumptions for using t statistic:   The t statistic is used when the sample size is small…

Q: In a certain village in Turkey, a sample of 100 cl of drinking water is examined and it is found out…

A: p = 0.19 n = 100 Margin of error = 0.02

Q: The Pew Forum on Religion and Public Life reported on Dec. 9, 2009, that in a survey of 2003…

A: Given : Sample size(n)=2003sample proportion(p^)=0.25confidence level (c)=0.99α=1-c   =1-0.99…

Q: A certain article indicates that in a sample of 1,000 dog owners, 680 said that they take more…

A:

Q: By means of a pilot survey, it is already known that the proportion of residents in opposition to…

A: Formula for sample size is,

Q: An automotive manufacturer wants to know the proportion of new car buyers who prefer foreign cars…

A:

Q: CBS News/New York Times poll used a convenience sample to survey 75 Americans and found that 61…

A: We know that there are two conditions that should be met before determining the confidence interval…

Q: A random sample of 62 suspension helmets used by motorcycle riders and automobile race-car drivers…

A: Given,n=62x=37p^=xn =3762 =0.5971-p^=1-0.597=0.403α=1-0.90=0.1α2=0.05z0.05 =1.645

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: A local health center noted that in a sample of 400 patients, 80 were referred to them by the local…

A: From the provided information, Sample size (n) = 400 From which 80 were referred to them by the…

Q: In another pre-election poll, a pollster finds that 442 out of 650 people polled favor Smith.…

A: Given: Total no of people polled , n=650 No. of people favor Smith, x=442 Confidence level=95%

Q: The results of the National Health and Nutrition Examination Survey for the year 2011-12 found that…

A:

Q: In a recent poll of 1200 randomly selected adult office workers, 32% said they had worn a Halloween…

A: a. it is given that 32% said they had worn a Halloween costume to the office at least once. A sample…

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

A:

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: 5. In the past, 44% of those taking a public accounting qualifying exam have passed the exam on…

A:

Q: laboratory tested twelve chicken eggs and found that the mean amount of cholesterol was 206…

A:

Q: In the week before and the week after a​ holiday, there were 10,000 total​ deaths, and 4984 of them…

A:

Q: In the past, 44% of those taking a public accounting qualifying exam have passed the exam on their…

A: Given: p=0.44 n=250 X: Passing on first attempt X=130 α=0.025

Q: From the estimation of the number of aggravated assault (1,092,090) in 2014 at a 95% confidence…

A: Given the table of violent victimization by type of violent crime, 2014 and 2015.

Q: A certain article indicates that in a sample of 1,000 dog owners, 610 said that they take more…

A: Given: Sample size (n) = 1000 Number of owners who take more picture of their dog than their owner =…

Q: A Pew Research Center survey of 1,857 internet users found that 1,124 people agreed that online…

A: Given: CI=95% p^=11241875=0.599 n=1875

Q: From a research survey, it was found that a random sample of 18 elementary graduates of an exclusive…

A: To find: a. Use the traditional method, and b. The P-value method c. Construct a 95% confidence…

Q: A survey of 1,000 US adults was conducted to determine whether they believe raising the minimum wage…

A: From the given information the 99% confidence interval was ( 0.443, 0.411)

Q: In a study of academic procrastination, the authors of a paper reported that for a sample of 441…

A: (a) The degrees of freedom is, df=n-1=441-1=440 The degrees of freedom is 440. Computation of…

Q: An article reported that for a sample of 58 kitchens with gas cooking appliances monitored during a…

A:

Q: Past experience has indicated that the breaking strength of yarn used in manufacturing drapery…

A: GivenMean(x¯)=95standard deviation(σ)=3sample size(n)=8α=1-0.95=0.05α2=0.025zc=zα2=z0.025=1.96…

Q: From a random sample of 185 children from school G, 108 indicated they wanted to study science in…

A:

Q: A survey of a random sample of 40 actuarial scientists who passed all their exams and are 7. working…

A:

Q: 1) In a random sample of 200 Americans, 58% said they plan to spend less on their summer vacation…

A:

Q: It was found that in a sample of 90 teenage boys, 70% of them have received speeding tickets. What…

A: Given data ,n=90P=70%=0.7The z-value at 90% confidence is1.645=z∝12=1.645