In July 2018, the Gallup Poll asked a random sample of 1033 American adults, "Has drug abuse ever been a cause of trouble in your family?" The poll found that 30% of respondents said "yes," a record high percentage since the question started being asked in 1995.   Suppose that the sample size had been 3500 rather than 1033. Find the margin of error for 95% confidence for the larger sample. Give your answer to three decimal places. margin of error:

Q: A consumer agency wants to estimate the proportion of all drivers who wear seat belts while driving.…

A:

Q: A survey of women who are the main meal preparers in their households reported that 80% know that…

A: From the provided information, A survey of women who are the main meal preparers in their households…

Q: A researcher wishes to estimate the proportion of adults who have​ high-speed Internet access. What…

A:

Q: A consumer agency wants to estimate the proportion of all drivers who wear seat belts while driving.…

A:

Q: In a recent poll, 300 people were asked if they liked dogs, and 54% said they did. Find the Margin…

A: Obtain the margin of error for the poll at the 95% confidence level. The margin of error for the…

Q: In a recent poll, 200 people were asked if they liked dogs, and 16% said they did. Find the Margin…

A: Solution: From the given information, 0.16 and n=200. The confidence level is 0.90.

Q: The Centers for Disease Control reported the percentage of people 18 years of age and older who…

A: a) The sample size can be estimated as follows: n=ze2p(1-p)where, z = z scoree = errorp =…

Q: A survey of shoppers is planned to see what percentage use credit cards. Prior surveys suggest 53%…

A: Find z-critical value:…

Q: In a recent poll, 410 people were asked if they liked dogs, and 24% said they did. Find the Margin…

A: We have to find margin of error.

Q: find a 99% confidence interval for the proportion of us adults favoring taxes on soda and junk food.…

A:

Q: A researcher wishes to estimate the proportion of adults who have high-speed Internet access. What…

A: It is given that margin of error (E) is 0.04 and the confidence level is 99%.

Q: A federal report indicated that 58% of children under age 6 live in poverty in Puerto Rico, an…

A:

Q: An article in the October 11, 2006, issue of the Washington Post claimed that 15% of high school…

A:

Q: A recent survey asked the question, “Have you ever cut off communication with a family member…

A: Given that, p^=0.17,n=5592 Critical values: By using the standard normal table of Z, the critical…

Q: A consumer agency wants to estimate the proportion of all drivers who wear seat belts while driving.…

A:

Q: A sample consisting of 410 men and 795 women was asked various questions pertaining to international…

A: To find the male sample, female sample and the combined sample :

Q: If you knew that a study reported that 73% of pre-kindergarten children ages 3 to 5 whose mother had…

A:

Q: A researcher wishes to estimate the proportion of adults who have high-speed Internet access. What…

A:

Q: A researcher wishes to estimate the proportion of adults who have​ high-speed Internet access. What…

A: (a) Given that, Critical values: Using the z-table, the critical value at 95% confidence level is…

Q: According to Randall Financial, through April 25, 2018, 64% of companies reported profits had…

A: The proportion is 0.64, margin of error is 0.05, and confidence level is 95%. Computation of…

Q: In a recent poll, 410 people were asked if they liked dogs, and 32% said they did. Find the Margin…

A:

Q: In a survey of 323 adults over 50, 60% said they were taking vitamin supplements. Find the margin of…

A:

Q: in a recent year, a study found that 75% of adults ages 18–29 had internet access at home. A…

A: Solution: Let X be the number of undergraduates had internet access and n be the sample number of…

Q: Many people think that a national lobbyʹs successful fight against gun control legislation is…

A: It is given that margin of error (E) is 0.05 and the confidence level is 0.99.

Q: A researcher wishes to estimate the proportion of adults who have​ high-speed Internet access. What…

A: The random variable is adults who have​ high-speed Internet access. It follows standard normal…

Q: A researcher wishes to be 95% confidence that her estimate of the true proportion of individuals who…

A: Given that  Confidence level (C) = 95%  The true proportion of individuals who travel overseas is…

Q: A researcher was commissioned to find out the proportion of students who use mobile phones in online…

A: Given: X=475N=500ME=0.01CI=0.99

Q: A researcher wishes to estimate the proportion of adults who have high-speed internet access. What…

A:

Q: sample of 10331033 American adults, "Has drug abuse ever been a cause of trouble in your family?"…

A:

Q: If you knew that I study reported that 67% of pre-kindergarten children ages 3 to 5 whose mother had…

A:

Q: The Centers for Disease Control reported the percentage of people 18 years of age and older who…

A: The estimated proportion is 0.30.The formula to find the required sample size (n) to estimate the…

Q: In a recent poll, 170 people were asked if they liked dogs, and 87% said they did. Find the Margin…

A: Given  p = 0.85, n = 170  Find margin of error for this poll

Q: It is believed that 12% of Americans use a traditional antenna to watch network television. How…

A: Given that  Population proportion p=12%=0.12 Margin of error =E =2%=0.02

Q: In a recent poll, 450 people were asked if they liked dogs, and 54% said they did. Find the Margin…

A: Solution

Q: A researcher wishes to estimate the proportion of adults who have high-speed Internet access. What…

A:

Q: (a) Starting with the 75% estimate for Italians, how large a sample must you collect in order to…

A: The method of Sample Size and margin of error will be used: In a confidence interval, the range,…

Q: In a recent poll, 560 people were asked if they liked dogs, and 80% said they did. Find the Margin…

A: We have to find out given confidence interval..

Q: What sample size is needed to give a margin of error within ±3%±3% in estimating a population…

A: We have given that,  Population proportion (p) = 0.4, margin of error (E) = ±3% = 0.03 and…

Q: A Businessweek/Harris survey asked senior executives at large corporations their opinionsabout the…

A:

Q: A consumer agency wants to estimate the proportion of all drivers who wear seat belts while driving.…

A: It is given that the margin of error (E) is 0.49.

Q: Suppose we estimated that 68 percent of Santa Fe students believe that black coffee is disgusting.…

A:

Q: In a recent poll, 350 people were asked if they liked dogs, and 41% said they did. Find the Margin…

A: Given ,        Sample size n=350        Sample proportion p∧=0.41             1-p∧=1-0.41=0.59and…

Q: Which store do you think is more expensive—physical or online? A recent survey found that 45% of…

A:

Q: The Centers for Disease Control reported the percentage of people 18 years of age and older who…

A: Given:Margin of error (E) = 0.02Confidence level = 95%Population proportion (p) = 0.26

Q: A researcher wishes to estimate the proportion of adults who have​ high-speed Internet access. What…

A: Given information: Margin of error(E)=0.03. Confidence level= 90%. α=1-0.90  =0.10 Zα2=Z0.102…

Q: In a recent poll, 440 people were asked if they liked dogs, and 21% said they did. Find the Margin…

A: