QuestionIn a poll of 510 human resource professionals, said that body piercings and tattoos were big personal grooming red flags. Complete parts (a) through (d) below. a. Among the 510 human resource professionals who were surveyed, how many of them said that body piercings and tattoos were big personal 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 personal grooming red flags. (Round to three decimal places as needed.) c. Repeat part (b) using a confidence level of . < (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? proportion. proportion. proportion. proportion.
Studdy Solution
Compare the confidence intervals:
- The 99% confidence interval is .
- The 80% confidence interval is .
The 99% confidence interval is wider because a higher confidence level requires a larger margin of error to ensure that the interval captures the true population proportion with greater certainty.
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