Find the sample​ size, n, needed to estimate the percentage of adults who have consulted fortune tellers. Use a 0.09 margin of​ error, use a confidence level of 98​%, and use results from a prior poll suggesting that 18​% of adults have consulted fortune tellers. n=

Q: In a survey of 2591 adults in a recent​ year 1414, say they have made a New​ Year's resolution.…

A: From the provided information,Confidence level = 90% and 95%

Q: Use the sample data and confidence level given below to complete parts (a) through (d). A research…

A: Option A is correct

Q: Use the sample data and confidence level given below to complete parts  (c).   A research institute…

A: It is given that, the number of respondents said yes (x) is 587 and the sample size (n) is 912.  The…

Q: Find the sample​ size, n, needed to estimate the percentage of adults who have consulted fortune…

A:

Q: Use the sample data and confidence level given below to complete parts​ (a) through​ (d). A research…

A:

Q: In a survey of 2549 adults in a recent​ year, 1270 say they have made a New​ Year's resolution.…

A:

Q: A researcher wants to estimate the proportion of electric car owners in Los Angeles County. The…

A: According to the given information, we havePopulation proportion, p = 10% = 0.10Margin of error, E =…

Q: A 95% confidence interval for the proportion p active voters in the municipality of Aibonito is 0.57…

A:

Q: A research institute poll asked respondents if they felt vulnerable to identity theft. In the poll,…

A:

Q: An American Express retail survey found that 16% of U.S. consumers had used the internet to buy…

A:

Q: Find the sample size needed to estimate the percentage of adults who can wiggle their ears. Use a…

A: Step 1: Given informationConfidence level, c = 0.90Margin of error, E = 0.05 Step 2: Part (a)The…

Q: Use the sample data and confidence level given below to complete parts ( a ) through ( d ) . A…

A: In the given pool  and  who said "yes".The confidence level is 95%.

Q: In a survey of 2405 adults in a recent​ year, 1217 say they have made a New Year's resolution.…

A: Given: n=2405 x=1217

Q: Use the sample data and confidence level given below to complete parts  (b)   A research institute…

A: Margin of error can be calculated as shown below.

Q: Use the sample data and confidence level given below to complete parts (a) through (d). A research…

A:

Q: Use the sample data and confidence level given below to complete parts (a) through (d). A research…

A: Given that    A research institute poll asked respondents if they felt vulnerable to identity theft.…

Q: Ise the sample data and confidence level given below to complete parts (a) through (d). A research…

A: Givenn=2359x=909α=1-0.99=0.01α2=0.005zα2=2.58

Q: In a survey of 2407 adults in a recent​ year,1468 say they have made a New​ Year's resolution.…

A: Given that,  Sample size, n= 2407 And X= 1468 We know that proportion, p=X/n So p= 1468/2407 p=…

Q: Find the sample size of American adults you would need to predict the results of an election with a…

A: Given thatMargin of error (E) = 0.02 Confidence level (c) = 90% = 0.90Significance level (α) = 1 -…

Q: In a survey of 2108 adults in a recent​ year, 1305 say they have made a New​ Year's resolution.…

A:

Q: In a survey of 2000 adults in a recent​ year 1404, say they have made a New​ Year's resolution.…

A: n=2000x=1404

Q: When 307 college students are randomly selected and surveyed, it is found that 128 own a car. Find a…

A: Given Data Sample Size, n = 307 Number of successes, x = 128 Significance level,…

Q: You recently sent out a survey to determine if the percentage of adults who use social media has…

A: We have to find the confidence interval for population proportion (p) CI = p^ ±zα/2p^(1-p^)n Where,…

Q: A poll of 1103 home sellers found that 29.8% were trying to sell their home without a real estate…

A: Given,sample size(n)=1103sample proportion(p^)=0.298margin of error(E)=0.027

Q: Use the sample data and confidence level given below to complete parts​ (a) through​ (d). A research…

A: The random variable X follows normal distribution. We have to construct 95% confidence interval.…

Q: Use the given confidence interval to find the margin of error and the sample proportion.…

A:

Q: level giver parts (a) through (d). A research institute poll asked respondents if they felt…

A: a) If x denotes the number of cases favorable to an event in a sample of size n, then the sample…

Q: Find the sample size needed to estimate the percentage of adults who can wiggle their ears. Use a…

A: GIVEN DATA,margin of error =1%=0.01CI=0.95α=1-0.95=0.05Zc=Zα/2=Z0.05/2=Z0.025=1.96 [ from excel…

Q: Use the sample data and confidence level given below to complete parts (a) through (d). A research…

A: Step 1: Given informationSample size, n = 1031Number of successes, x = 543Confidence level, c = 0.90…

Q: use the sample data and confidence level given below to complete parts​ (a) through​ (d). a research…

A:

Q: Find the sample size needed to estimate the percentage of adults who can wiggle their ears. Use a…

A: Margin of error(E)=4%=0.04confidence level=99%

Q: Use the sample data and confidence level given below to complete parts (a) through (d). A research…

A: According to the given information in this question  There are more than three subparts according to…

Q: Use the sample data and confidence level given below to complete parts (a) through (d). A research…

A: Step 1: Given informationSample size, n = 1031Number of successes, x = 543Confidence level, c = 0.90…

Q: Use the sample data and confidence level given below to complete parts (a) through (d). A research…

A: Sample size n=972 Number of successes x=577 Confidence level 99%

Q: Use the sample data and confidence level given below to complete parts (a) through (d). A research…

A: Step 1: The best point estimate of the population proportion p is given by the sample proportion…

Q: Find the sample size needed to estimate the percentage of adults who can wiggle their ears. Use a…

A: Margin of error E=2%=0.02C.I=99%=0.99

Q: Use the given confidence interval to find the margin of error and the sample proportion.…

A: Confidence interval (0.761,0.785)

Q: In a survey of 2334 adults in a recent​ year,1370 say they have made a New​ Year's resolution.…

A: Given n=2334 X=1370

Q: A research institute poll asked respondents if they felt vulnerable to identity theft. In the​ poll,…

A:

Q: A research institute poll asked respondents if they acted to annoy a bad driver. In the poll, n=2320…

A: The random variable percentage of people who said they honked follows binomial distribution. The…

2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.