Estimate, with 95% confidence level, the true proportion of low-income people who will  vote for the introduction of the tax. b/ Can we conclude at the 5% level of significance that the proportion of high-income voters  favoring the new security tax is 10% higher than that of low-income voters?

Q: A recent Gallop poll showed that 672 of 1019 adults nationwide think that marijuana should be…

A: Given data, n=1019 x=672 p=x/n =672/1019 =0.66 z-value at 95% confidence is Zc=1.96

Q: Suppose a polling agency reported that 47.3% of registered voters were in favor of raising income…

A: We have given that  best point estimate of proportion p^ = 47.3% = 0.473 Sample size n = 1001 Margin…

Q: Suppose in 2011 a survey of 997 workers in the city of Vancouver found that 204 used public…

A: The sample size is .The number of people who use public transport to commute in Vancouver is .

Q: A store randomly samples 603 shoppers over the course of a year and finds that 142 of them made…

A: a: It is given that 142 out of 603 shoppers made their visits because of a coupon they’d received in…

Q: Estimate the percentage of workers in Toronto who use public transport to commute to work. Give your…

A: Suppose in 2011 a survey of 1154 workers in the city of Toronto found that 253 used public transport…

Q: Suppose in 2011 a survey of 1067 workers in the city of Calgary found that 183 used public transport…

A: It is given that sample size (n) is 1,067 and x is 183.

Q: In a public opinion survey, 60 out of a sample of 70 high-income voters and 90 out of a sample of…

A:

Q: A recent Gallop poll showed that 672 of 1019 adults nationwide think that marijuana should be…

A:

Q: In a poll of 558 human resource professionals, 36.4% said that body piercings and tattoos were big…

A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts.  In case…

Q: In a recent survey of 1002 people, 701 said that they voted in a recent presidential election.…

A: n=1002, X=701, pcap=0.61 pcap=x/n

Q: 25. A newspaper conducted a statewide survey concerning the race for state senator. The newspaper…

A: Given that, Let x be the registered voters in the sate who would vote for the republican candidate =…

Q: A random survey of 600 registered voters revealed that only 39% actually voted in the last primary…

A: Given that, A random survey of 600 registered voters revealed that only 39% actually voted in the…

Q: In a recent poll, from a sample of 300 likely voters, 175 answered they approve the way the…

A: We have given that,  Favorable cases (X) = 175 and sample size     (n) = 300 then,  We will find the…

Q: Suppose that a market research firm is hired to estimate the percentage of adults living in a large…

A: From the given information, x=64 and n=94.

Q: Suppose a polling agency reported that 44.1​%of registered voters were in favor of raising income…

A: Givensample proportion(p^)=44.1%=0.441sample size(n)=1047confidence level=99%Margin of…

Q: 9) In a research center poll, 88 % of of 3011 adults surveyed said they use the in- ternet.…

A:

Q: A poll of 1,200 voters asked what the most significant issue was in the upcoming election.…

A:

Q: Another mistaken poll Prior to the mayoral electiondiscussed in Exercise 15, the newspaper also…

A: To examine the winner in the mayoral election, a newspapers management conducted a poll. The paper…

Q: Suppose in 2011 a survey of 1064 workers in the city of Calgary found that 184 used public transport…

A: From the provided information, Sample size (n) = 1064 From which 184 used public transport to…

Q: A TV news reporter says that a proposed constitutional amendment is likely to win approval in the…

A: The random variable vote percentage follows binomial distribution. The sample size is 2500. The…

Q: Suppose in 2011 a survey of 1154 workers in the city of Montreal found that 268 used public…

A: Percentage is most often ways to represent statistics. Percentage simply means per hundred.…

Q: there are many reasons adults use credit cards. A recent survey found that 58% of adults used credit…

A: A recent survey found that 58% of adults used credit cards for convenience. p = 0.58 a) to conduct a…

Q: 1a) Out of 625 people, 240 of them said that they favor a new proposed law. From this result, we…

A: Confidence interval:A confidence interval is a range of values that is likely to contain the true…

Q: A member of the city government thinks that 90 percent confidence isn't enough. He wants to be 99…

A: Given that  A member of the city government thinks that 90 percent confidence isn't enough. He wants…

Q: Suppose in 2011 a survey of 1067 workers in the city of Toronto found that 244 used public transport…

A: The random variable usage of public transport follows binomial distribution. X ~ B (n, p) = > X ~…

Q: Suppose in 2011 a survey of 1037 workers in the city of Vancouver found that 225 used public…

A: Given that in a survey in 2011 out of 1037 workers , 225 workers use public transport to commute to…

Q: In a poll, 1000 randomly selected adults are surveyed and 250 of them support a certain social…

A: Solution: 4. a. Let X be the number of adults support a certain social program and n be the sample…

Q: A sociologist wants to construct a 96% confidence interval for the proportion of children aged 5 –…

A: The z-value for 96% confidence is2.054     ∴ z∝12=2.054a)Given data ,P=0.20M.E=0.02n=?W.C.T…