From a survey of coworkers you find that 4040% of 180180 have already received t

Question

From a survey of coworkers you find that 4040% of 180180 have already received this year's flu vaccine. An approximate 9898% confidence interval is (0.3150.315, 0.4850.485). a) How would the confidence interval change if the sample size had been 720720 instead of 180180? b) How would the confidence interval change if the confidence level had been 9999% instead of 9898%? c) How would the confidence interval change if the confidence level had been 9595% instead of 9898%? a) Select the correct choice below and fill in the answer box within your choice. A. The new confidence interval would be wider. The standard error would be multiplied by a factor of nothing. B. The new confidence interval would be narrower. The standard error would be divided by a factor of nothing. b) Complete the statement below to describe the new confidence interval. The new confidence interval would be narrower wider because the critical value is larger. smaller. c) Complete the statement below to describe the new confidence interval. The new confidence interval would be wider narrower because the critical value is smaller. larger.

Explanation / Answer

A) The new confidence interval would be narrower. The standard error would be multiplied by a factor of 0.5.

B)The new confidence interval would be wider. The standard error would be divided by a factor of 1.

b)The new confidence interval would be wider because the critical value is larger.

c)The new confidence interval would be  narrower because the critical value is smaller.

Related Questions

Navigate

• Browse (All)
• Browse F
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.