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: 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

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

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A: Sample proportion p = 775/1100 p = 0.7045   n = 1100

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

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

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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…

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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.