A May 2000 Gallup poll found that 38% of a random sample of 1012 adults in the United States said that they believe in ghosts. a. Construct and interpret a 96% confidence interval to estimate the true proportion of all U. S. adults who believe in ghosts. b. What sample size would have been necessary to estimate within 2% the true proportion of adults who believe in ghosts with 95% confidence?

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A: Given : n=3239 p^=85.8%=0.858The formula for confidence interval for population proportion is…

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A: Define p as the true population proportion of adults in the country who think immigration is a good…

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A: Objective of this question is that, which option is the correct choice.

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A: Given n=832 P=0.46

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A: Given :  n = 3005 p̂=0.817

Q: In a survey of 3320 adults aged 57 through 85​ years, it was found that 83.5​% of them used at least…

A: Given that n=sample size= 3320  Point estimate=p^=83.5%=0.835a) The number of people who used at…

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A: The formula for computing confidence interval is,  n is the sample size and P is the proportion.

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A:

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Q: n a survey of 500 students, 180 students said that they prefer classes on Mondays and Wednesdays…

A:

Q: . How many of the 3335 subjects used at least one prescription​ medication? b. Construct a​ 90%…

A: n = 3335 p = 0.804

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A: It is given that, 32% of the 1003 adults said that national identity is strongly tied to birth…

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A:

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A: Given data: n = 829 p = 0.51

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

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A:

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A:

Q: In a survey of 3432 adults aged 57 through 85 years, it was found that 81.5% of them used at least…

A:

Q: A TV report conducted a survey of 824 people in New York City and found that 31% of the population…

A: The sample size: n=824 The population proportion: p=31% The 98% confident that the true proportion…

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A: Let, x denotes the adults who says immigration is good thing. Total respondents: n=1078 x=612

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A:

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

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A: Given data: Chapter Review Overall Grade 98 96 96 94 94 90 93 94 92 91 92 96 91 93…

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A: Hey, since there are multiple subparts posted, we will answer the first three subparts. If you want…

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A: It is given that the data of random sample of 20 randomly selected presidents. From the given data,…

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A: Sample size(n)=2480sampl proportion(p^)=0.15Margin of error(E)=0.03

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A:

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A: From the provided data set, it is clear that out of 20, 10 presidents were taller than their…

Q: In a survey of 3293 adults aged 57 through 85​ years, it was found that 80.8​% of them used at least…

A: Given Information Total adults(n) = 3293

Q: survey conducted by Gallup in 2020 asked 1,102 randomly selected U.S. adults, "What do you think is…

A: We have given that  Sample size n=1102 90% confidence interval.  = (0.6773, 0.7227)

Q: If 64% of a sample of 550 people leaving a shopping mall claims to have spent over $25 create and…

A: Given,   Sample size = 550 Sample proportion = 0.64   Critical value: Using z-table, the z-critical…

Q: poll asked adults in a certain country whether immigration was a good thing or a bad thing for the…

A: A poll asked adults in a certain country whether immigration was a good thing or a bad thing for the…

Q: A poll asked adults in a certain country whether immigration was a good thing or a bad thing for the…

A: Given information is A poll asked adults in a certain country whether immigration was a good thing…

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.