The Pew Forum on Religion and Public Life reported on Dec. 9, 2009, that in a survey of 2003 American adults, 25% said they believed in astrology. a. Calculate and interpret a confidence interval at the 99% confidence level for the proportion of all adult Americans who believe in astrology.b. What sample size would be required for the width of a 99% CI to be at most .05 irrespective of the value of p̂?

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: In a survey of 600 personnel directors, 40% thought that they would be hiring new personnel over the…

A:

Q: A sample survey finds that 30% of a sample of 880 Ohio adults said good health was the thing they…

A:

Q: Construct the requested confidence interval. In a Gallup Poll of 1005 individuals, 452 thought they…

A:

Q: The research group asked the following question of individuals who earned in excess of​ $100,000 per…

A:

Q: When a survey asked subjects whether they would be willing to accept cuts in their standard of…

A: It is given that 362 out of 1,180 subjects respond yes.The sample proportion is 362/1,180 =…

Q: Which of the following is thet-value for a 95% confidence level when the sample size is 20. O a.…

A:

Q: Of 118 randomly selected adults, 34 were found to have high blood pressure. Construct a 95%…

A: According to the given information, we have Total number of adults = 118 34 were found to have high…

Q: In a study by Sallie Mae and Gallup, 223 of the 934 respondents said that they paid for their…

A: Obtain the 95% confidence interval for the proportion of students who paid for their education by…

Q: Discuss how much of the following factors affects the width of the large-sample two-sided confidence…

A: Confidence interval is given by

Q: The figure to the right shows the results of a survey in which 1003 adults from Country A, 1024…

A: Given information For country A p-hat = 0.35 n = 1003

Q: The 2010 General Social Survey asked the question: “After an average work day, about how many hours…

A: a) There is 95% confidence that the proportion of number of hours spent relaxing or pursuing…

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: The International Nanny Association (INA) reports that in a sample of 928 in- home child care…

A: Solution: A. Let X be the number of number of nannies who have passed the INA certification exam and…

Q: Which of the following would result in the narrowest confidence interval? A. 80% confidence level…

A: The narrowest confidence interval will result from larger sample size and a smaller confidence…

Q: Based on the provided sample data determine the 95% Confidence Interval for the proportion of all…

A: The total frequency is 15+12+27+54+42=150.

Q: For a confidence level of .90, what is the significance level?

A: We have find significant leval..

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 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: The figure to the right shows the results of a survey in which 1003 adults from Country A, 1024…

A: Given information For country A p-hat = 0.35 n = 1003

Q: The figure to the right shows the results of a survey in which 1003 adults from Country A, 1024…

A: Given information For country A p-hat = 0.35 n = 1003

Q: A &B

A: The provided data mentions the value of sample size, n is 928 and the value of x is 128. The…

Q: A random sample of 34 participants in a Zumba dance class had their heart rates measured before and…

A: a)

Q: In a study of government financial aid for college​ students, it becomes necessary to estimate the…

A: Find z-critical value:…

Q: Using the accompanying colleges and universities data to find 95% confidence intervals for the…

A: Given:   Liberal Arts Colleges Research Universities 1169 1117 1194 1133 1204 1148 1210…

Q: The figure to the right shows the results of a survey in which 1010 adults from Country A, 996…

A:

Q: Given the following confidence interval for a population mean, compute the margin of error, E.…

A: A confidence interval of population mean, µ, in terms of sample mean and margin of error, can be…

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

A:

Q: Suppose that a safety group surveyed 800 drivers. Among those​ surveyed, 83​% said that careless or…

A: Given Information :  Suppose that a safety group surveyed 800 drivers. Among those​ surveyed, 83​%…

Q: If the alpha level is .05, then the confidence level is ?

A: Given: alpha = 0.05 confidence level / significant level = 1 - alpha

Q: 4. A researcher asks 600 people if they received a flu vaccine, and 65% said they did. What is the…

A:

Q: In June 2020, a Gallup Poll asked U.S. adults whether immigration was a good thing or a bad thing…

A: Given X=600 n=1000

Q: In a study of government financial aid for college​ students, it becomes necessary to estimate the…

A:

Q: The following small data set represents a simple random sample from a normally distributed…

A: a. The point estimate of is, Thus, the point estimate of is 50.25.

Q: After Texas A&M lost again to their rival, the University of Texas, in a football game, the A&M…

A: As nothing is given , p = 0.50

Q: In 2017, the CDC administered the Youth Risk Behavior Survey (YRBS) to a random sample of 14,795…

A: Obtain the 99% confidence interval for the proportion of the high school students have been cyber…

Q: A recent survey of cell phone users indicated that 56 percent of the respondents prefer to use cell…

A: Given that 56% of the respondents prefer to use cell phones for texting rather than for making phone…

Q: he Pew Social Media Update 2014 surveyed 1,597 adult internet users on which social media websites…

A: Given information- We have given that Social Media Update 2014 surveyed 1,597 adult internet users…

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

A: It is given that:

Q: The figure to the right shows the results of a survey in which 999 adults from Country A, 1002…

A:

Q: In a study of government financial aid for college​ students, it becomes necessary to estimate the…

A: Assume sample proportion(p^)=0.5margin of error(E)=0.05α=1-0.99=0.01α2=0.005Z0.005=2.58    (from…

Q: What is the corresponding significance level for a confidence level of 99%? A 1 B) 0.1 0.01 0.05

A: Given that 99% confidence level

Q: The z value for a 96.6% confidence interval estimate is?

A: z value for a 96.6% confidence interval estimate is?

Q: The figure to the right shows the results of a survey in which 1003 adults from Country A, 1024…

A: Given information For country A p-hat = 0.35 n = 1003

Q: The figure to the right shows the results of a survey in which 1003 adults from Country A, 1024…

A: Given information For country A p-hat = 0.35 n = 1003

Q: In the construction of confidence intervals, if all other quantities are unchanged, a increase in…

A: Given : sample size in increased

Q: If n=420 and ˆpp^ (p-hat) =0.19, find the margin of error at a 95% confidence level

A:

Q: In a study by Sallie Mae and Gallup, 323 of the 569respondents said that they paid for their…

A:

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.