Question

In: Math

In a poll of 593 human resource​ professionals, 49.1 ​% said that body piercings and tattoos...

In a poll of

593

human resource​ professionals,

49.1

​%

said that body piercings and tattoos were big grooming red flags. Complete parts​ (a) through​ (d) below.

​a) Among the

593

human resource professionals who were​ surveyed, how many of them said that body piercings and tattoos were big grooming red​ flags?

291

​(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.

0.438

less than p less than0.544

​(Round to three decimal places as​ needed.)

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

_____<p< _________

Solutions

Expert Solution

In a poll of 593 human resource​ professionals, 49.1 ​% said that body piercings and tattoos were big grooming red flags. Complete parts​ (a) through​ (d) below.

​a) Among the 593human resource professionals who were​ surveyed, how many of them said that body piercings and tattoos were big grooming red​ flags?

291

​(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.

0.438 less than p less than 0.544

​(Round to three decimal places as​ needed.)

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

0.464 < p < 0.517

Confidence Interval Estimate for the Proportion

Data

Sample Size

593

Number of Successes

291

Confidence Level

99%

Intermediate Calculations

Sample Proportion

0.490725126

Z Value

2.5760

Standard Error of the Proportion

0.0205

Interval Half Width

0.0529

Confidence Interval

Interval Lower Limit

0.438

Interval Upper Limit

0.544

Confidence Interval Estimate for the Proportion

Data

Sample Size

593

Number of Successes

291

Confidence Level

80%

Intermediate Calculations

Sample Proportion

0.490725126

Z Value

1.2820

Standard Error of the Proportion

0.0205

Interval Half Width

0.0263

Confidence Interval

Interval Lower Limit

0.464

Interval Upper Limit

0.517

milcah answered 1 year ago
Next > < Previous

Related Solutions

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...
In a poll of 510 human resource​ professionals, 47.6% said that body piercings and tattoos were...
In a poll of 510 human resource​ professionals, 47.6% said that body piercings and tattoos were big 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 grooming red​ flags? 243 ​(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...
In a Harris poll of 514 human resource professionals, 45.9% said that body piercings and tattoos...
In a Harris poll of 514 human resource professionals, 45.9% said that body piercings and tattoos were big grooming red flags. A professor of personnel managements believes that fewer than half of all human resources professionals would say that body piercings and tattoos were big grooming red flags. Use a significance level of 0.01 and 0.05 H0: _____ _____ ______ Ha: _____ _____ ______ a. Follow our procedure on page 2 of our Unit 3 Day 1 notes to bracket...
In a poll of 568 human resource​ professionals, 35.9​% said that body piercings and tattoos were...
In a poll of 568 human resource​ professionals, 35.9​% said that body piercings and tattoos were big grooming red flags. Complete parts​ (a) through​ (d) below. ​a) Among the 568 human resource professionals who were​ surveyed, how many of them said that body piercings and tattoos were big grooming red​ flags? 204 ​(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...
In a poll of 525 human rescourse professionals, 49.5% said that body piercings and tattoos were...
In a poll of 525 human rescourse professionals, 49.5% said that body piercings and tattoos were big red flags. Complete parts a through d below. A. Among the 525 how many of them said it’s a red flag B. Construct a 99% confidence interval estimate of the proportion of all professionals believing that it’s a red flag C. Repeat part B with a 80% confidence level D. Is B or C a wider interval and why?
In a poll of 555 human resource professionals, 40.0% said that body peircings and tattoos were...
In a poll of 555 human resource professionals, 40.0% said that body peircings and tattoos were big grooming red flags. Complete parts (a) through (d) a.) among the 554 human resource professionals who were surveyed, how many of them said that the body piercings and tattoos were big 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 grooming red flags < p...
Job Interviews: In a Harris poll of 514 human resource professionals, 463 human resource professionals said...
Job Interviews: In a Harris poll of 514 human resource professionals, 463 human resource professionals said the appearance of a job applicant is the most important for a good first impression. Use a 95% confidence level to construct a population percentage.
In a Harris poll of 514 human resource professionals, 90% said that the appearance of a...
In a Harris poll of 514 human resource professionals, 90% said that the appearance of a job applicant is most important for a good first impression. Construct a 99% confidence interval for the proportion of all human resource professionals believing that the appearance of a job applicant is most important for a good first impression. Also, find the margin of error.
piercings and tattoos. A Harris Interactive survey of 514 human resources professionals showed that 46% of...
piercings and tattoos. A Harris Interactive survey of 514 human resources professionals showed that 46% of them say that piercings or tattoos are big grooming red flags. The margin of error for the survey was 4 percentage points. A. Based on the given information, state what you think was the goal of the study. Identify a possible population and the population parameter of interest. B. Briefly describe the sample, raw data, and sample statistic for the study. C. Based on...
Testing a claim about a proportion: In a sample random poll of 514 human resource professionals,...
Testing a claim about a proportion: In a sample random poll of 514 human resource professionals, 236 said that body piercings and tattoos were big grooming red flags. Use a 0.01 significance level to test the claim that less than 50 % of all human resource professionals say that piercings are big grooming red flags. Show all of your 6 steps labeled in the box below.
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT