nd tattoos were big personal grooming red flags? 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 3 decimal points c. repeat b using 80% confidence d. Compare the confidence intervals from parts (b) and (c) and identify the interval that is wider. Why is it wider? A. The 99% confidence interval is wider than the 80% confidence interval. A confidence interval must be wider in order to be less confident that it captures the true value of the population proportion. B. The 99% confidence interval is wider than the 80% confidence interval. A confidence interval must be wider in order to be more confident that it captures the true value of the population proportion. C. The 80% confidence interval is wider than the 99% confidence interval. A confidence interval must be wider in order to be more confident that it captures the true value of the population proportion. D. The 80% confidence interval is wider than the 99% confidence interval. A confidence interval must be wider in order to be less confident that it captures the true value of the population proportion.
7. In a poll of 519 human resource professionals, 45.9% said that body piercings and tattoos were big personal grooming red flags. Complete parts (a) through (d) below.
a. Among the 519 human resource professionals who were surveyed, how many of them said that body piercings and tattoos were big personal grooming red flags?
b. Construct a 99% confidence
c. repeat b using 80% confidence
d. Compare the confidence intervals from parts (b) and (c) and identify the interval that is wider. Why is it wider?
A. The 99% confidence interval is wider than the 80% confidence interval. A confidence interval must be wider in order to be less confident that it captures the true value of the population proportion.
B. The 99% confidence interval is wider than the 80% confidence interval. A confidence interval must be wider in order to be more confident that it captures the true value of the population proportion.
C. The 80% confidence interval is wider than the 99% confidence interval. A confidence interval must be wider in order to be more confident that it captures the true value of the population proportion.
D. The 80% confidence interval is wider than the 99% confidence interval. A confidence interval must be wider in order to be less confident that it captures the true value of the population proportion.
Trending now
This is a popular solution!
Step by step
Solved in 5 steps with 4 images
