In a poll of 515 human resource professionals, 50.1 % said that body piercings and tattoos...

In a poll of 515 human resource professionals, 50.1 % said that body piercings and tattoos were big grooming red flags. Complete parts (a) through (d) below.

a) Among the 515 human resource professionals who were surveyed, how many of them said that body piercings and tattoos were big grooming red flags? (Round to the nearest integer as needed.)

b) Construct a 99% confidence interval estimate of the proportion of all human resource professionals believing that body piercings and tattoos are big grooming red flags.

? < p < ? (Round to three decimal places as needed.)

c) Repeat part (b) using a confidence level of 80%.

? < p < ? (Round to three decimal places as needed.)

d) Compare the confidence intervals from parts (b) and (c) and identify the interval that is wider. Why is it wider? Select the correct choice below.

A. The ? % confidence interval is wider than the ? % confidence interval. As the confidence interval widens, the probability that the confidence interval actually does contain the sample parameter increases.

B. The ? % confidence interval is wider than the ? % confidence interval. As the confidence interval narrows, the probability that the confidence interval actually does contain the sample parameter increases.

C. The ? % confidence interval is wider than than ?% confidence interval. As the confidence interval narrows, the probability that the confidence interval actually does contain the population parameter increases.

D. The ? % confidence interval is wider than the ? % confidence interval. As the confidence interval widens, the probability that the confidence interval actually does contain the population parameter increases.

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Expert Solution

D is the answer

orchestra answered 1 year ago

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In a poll of 515 human resource​ professionals, 50.1 ​% said that body piercings and tattoos...

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