Between 27 April 2020 and 10 May 2020, Gallup surveyed a random sample of 8,712 U.S. adults regarding their well-being. Of those surveyed, 24% reported feeling loneliness “during a lot of the day yesterday”.    (e) What is the 95% confidence interval for the proportion of US adults feeling loneliness “during a lot of the day yesterday”?

Q: According to the same Pew Internet study, 8% of those with broadband connections are using fixed…

A: The p-value of the test is 0.103. The decision is fail to reject H0.

Q: A June 2020 Angus Reid poll of 1510 Canadian adults found that 53% support the idea of a 30 hour…

A: Given Data: p^=0.53n=1510   z-value corresponding to 95% Confidence level=1.96

Q: In a random sample of 100 men in the United States, 55 of them were married. Using a 95% confidence…

A: We have given that,  Sample size (n) = 100 and favorable cases (X) = 55  Then,  We will find the 95…

Q: what would be the 90% confidence interval of the true proportion of young adults who have received…

A: Given that sample size is n = 190 And the sample proportion is 70% = 0.7 At 90% confidence level,…

Q: A November 2018 CBS News Poll found that 35% of its sample planned to use online retailers for most…

A: Given that, A November 2018 CBS News Poll found that 35% of its sample planned to use online…

Q: An organization advocating for health care reform has estimated the average cost for health care of…

A: Given : sample mean, x̄ = 13000  Margin of error , E = 1000

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

A: a).

Q: Greece has faced a severe economic crisis since the end of 2009. A Gallup poll surveyed 1,000…

A:

Q: In a random sample of 500 people eating lunch at a cafeteria on various Fridays, it was found that…

A:

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

A:

Q: In a survey of 950 randomly selected individuals, 17% answered yes to the question "Do you think the…

A: Sample size, n = 950Probability = 17% = 0.17 90% confidence level

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

A:

Q: 1. In a recent poll 62 out of 149 randomly chosen students at Allen High School say they plan to buy…

A:

Q: In a Gallup Poll of 1005 individuals, 452 thought they were better off financially than a year ago.…

A: Given; p=452n=1005 95% confidence interval is given by- p^±z×p^(1-p^)n true proportion is given as-…

Q: A pew Poll conducted in 2013 surveyed a random sample of 2003 adult Americans, and 18% of them said…

A: The random variable X follows normal distribution. We have to construct 90% confidence interval.…

Q: In a random sample of 500 people eating lunch at a cafeteria on various Fridays, it was found that…

A: Given that Sample size n= 500  Favorable cases x=160 Sample proportion p^=x/n

Q: In a survey on supernatural experiences, 722 of 4019 adult Americans surveyed reported that they had…

A: Given : Sample Size, n = 4019 Number of successes, x = 722 confidence level,c=0.9

Q: A Gallup Youth Survey in 2001 found that of 501 randomly selected teenagers in the U.S., 271 of them…

A: Given Total number of teenagers selected = 501Number of teenagers said who get along with their…

Q: Gallup is a company that carries out daily opinion polls on a variety of topics. In a recent daily…

A: The confidence interval can be found by using the formula p±zp(1-p)n

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: The International Nanny Association reports that in a sample of 528 in-home child care providers…

A: Solution:Part (a): Finding the 95% confidence interval for the true proportion of all nannies who…

Q: What is the value of Z for this confidence interval?

A: Given,sample size(n)=14795no.of people who said yes=2219no.of people who said no =12576

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: 1. A Pew Poll conducted in 2013 surveyed a random sample of 200 adult Americans and 36 of them said…

A: Note- Since you have posted multiple questions, as per our guidelines we are supposed to answer only…

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: 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: In a recent survey of US adults, 35 people were asked the question:   “Do you own a smart phone?”.…

A: Given data,n=35x=29Sample proportion p=xn=2935=0.83z-value at 90% confidence is Zc=1.645

Q: A survey of 620620 men shoppers found that 1111% of them shop on impulse. What is the 9595%…

A: Given,sample size(n)=620sample proportion(p^)=0.111-p^=1-0.11=0.89α=1-0.95=0.05α2=0.025Z0.025=1.96…

Q: b. In a random sample, 165 of 500 persons given a flu vaccine experienced some discomfort. i.…

A: Given that  Sample size n =500 Favorable cases x =165 Sample proportion p^=x/n  =165/500 =0.33

Q: A survey of 800 women shoppers found that 17% of them shop on impulse. What is the 98% confidence…

A:

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

A:

Q: Gallup is a company that conducts daily opinion polls on a variety of topics. In a recent daily…

A: Given that, Sample size, n = 1000 38% of the sample said they were committed to their work.

Q: b.Suppose a similar survey will be given to vaccine-eligible people in Canada by Canadian health…

A: Given data, p=0.5 E=0.02 z-value at 95% confidence is Zc=1.96 n=?

Q: B) False A senator wishes to estimate the true population proportion p of United States voters who…

A:

Q: A researcher computed a 90% confidence interval for the proportion of students who smoke. If the…

A: False. Relationship between confidence level and error:The error value increases when the confidence…

Q: Would you guess that people tend to buy more jeans when the weather is warm or when it is cold? The…

A:

Q: In an articie in the Journal of Advertising, Weinberger and Spotts compare the use of humor in…

A:

Q: In a certain high school, 7 out of 11 juniors said that they planned to go to the winter prom.…

A:

Q: According to a study completed in 2006 by Pew Internet, 42% of all Americans had a broadband…

A: The 95% confidence interval for p is (0.439, 0.457).

Q: How effective is the flu shot?  In a control study, 94 of the 859 participants who received the…

A: Given ,  x1==94 , n1=859x2==46 , n2=923p1=x1n1=94859=0.1094p2=x2n2=46923=0.0498 α=0.05

Q: 1. A recent survey showed that from a sample of 500 packages delivered by a Postal Service, 480 were…

A: We have given that  Sample size n= 500 , favorable cases x=480 Sample proportion p^=x/n=…

Q: The true proportion of c.c. students in her state, that receive an AD, is contained in that specific…

A: It is given that the confidence interval in b is calculated correctly.

Q: 1) In a four-year psychedelic-mushroom experiment, 93 of the 300 subjects reported experiencing…

A: It is given that:

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

A:

Q: The 2010 General Social Survey reported a sample where about 48% of US residents thought marijuana…

A:

Q: 10. A research group studying the use of Apple Pay asked the question, "Do you ever use Apple Pay…

A: 10. The 95% confidence interval can be interpreted as, when repeated samples are taken with the same…

Q: 1) Jaimie does a study on how many students have passed his classes in the past. He finds that 2739…

A: The random variable students who pass follow normal distribution. The number of successes is 2739.…

Q: A random sample of married people were asked "would you remarry your spouse if you were given the…

A: Given information x = 127 N = 150

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

Q: For one NBA playoff game the actual percentage of the television viewing public who watched the game…

A: Given information: PWatching the game=24%=24100=0.24n=50

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.