Use the sample data and confidence level given below to complete parts  (c).   A research institute poll asked respondents if they felt vulnerable to identity theft. In the poll, n = 912 and x = 587 who said  "yes." Use a 95% confidence level.   c. The 95% confidence interval is

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A: Here, n=256, x=130.

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A: From the provided information, Confidence level = 98% Sample size (n) = 900 Success (p̂) = 0.40

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A: X̄ = $13,550, σ = $2,000, n = 25,

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A:

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A: Given, x = 519 n = 956 p⏞=xn=519956=0.543 Now, z at 90% confidence level = 1.645

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A: The degrees of freedom is obtained as follows:

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A:

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A: Solution: 12. From the given information, x=586 and n=1006.

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Q: find the margin of error at a 90% confidence level

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A: Margin of error (E): The margin of error for sample mean is given by,

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

A: Answer:

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.