HomeworkLib
Question

3. A firm would like to estimate the proportion of employees that use a ride-share service;...

3. A firm would like to estimate the proportion of employees that use a ride-share service; e.g., Uber and/or Lyft. In a sample of 500 employees, 417 use ride-share. Round final answers to two decimal places. Solutions only.

(a) True, False, or Uncertain: The parameter of interest is the mean number of employees in the population who use ride-share.

(b) The critical value for a 99% confidence interval for this sample is ___.

(c) A 99% confidence interval for the proportion of employees who use a ride-sharing service is from ___ to ___.

math   Statistics-And-Probability   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

Answer Date: 15/11/2018 a) The parameter of interest is the mean number of employees in the population who use ride-share The answer is False Dteret n sbo use ride-share. b) The critical value for a 99% confidence interval for this sample is. From the standard normal table, the z-critical value for two-tailed at 99% confidence level is 2.575 The critical value for a 99% confidence interval for this sample is 2.575

0 0
Add a comment
Know the answer?
Add Answer to:
3. A firm would like to estimate the proportion of employees that use a ride-share service;...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • A research intern would like to estimate, with 98% confidence, the true proportion of employees who...

    A research intern would like to estimate, with 98% confidence, the true proportion of employees who eat out for lunch. No preliminary estimate is available. The researcher wants the estimate to be within 6% of the population mean. Use Excel to calculate the number of employees that should be surveyed to create the confidence interval. Remember to round up to the nearest whole number.

  • A) A certain region would like to estimate the proportion of voters who intend to participate...

    A) A certain region would like to estimate the proportion of voters who intend to participate in upcoming elections. A pilot sample of 25 voters found that 17 of them intended to vote in the election. Determine the additional number of voters that need to be sampled to construct a 95​% interval with a margin of error equal to 0.06 to estimate the proportion. The region should sample ____ additional voters. B) Determine the sample size needed to construct a...

  • What proportion of JMU students like online courses? To estimate this, a random sample of 200...

    What proportion of JMU students like online courses? To estimate this, a random sample of 200 students was taken and found that 50 of them like online courses. (1) Are the assumptions for constructing a confidence interval for the population proportion satisfied? Explain.(2) Construct a 99% confidence interval for the population proportion of JMU students who like online courses.(3) What is the margin of error in (2) ?______________(4) Interpret the 99% confidence interval.

  • Management wants an estimate of the proportion of the corporation’s employees who favor a modified bonus...

    Management wants an estimate of the proportion of the corporation’s employees who favor a modified bonus plan. From a random sample of 344 employees, it was found that 261 were in favor of this particular plan. Find a 90% confidence interval estimate of the true population proportion that favors this modified bonus plan. plz solve step by step

  • A university would like to estimate the proportion of fans who purchase concessions at the first...

    A university would like to estimate the proportion of fans who purchase concessions at the first basketball game of the season. The basketball facility has a capacity of 3 comma 500 and is routinely sold out. It was discovered that a total of 290 fans out of a random sample of 500 purchased concessions during the game. Construct a​ 95% confidence interval to estimate the proportion of fans who purchased concessions during the game. The​ 95% confidence interval to estimate...

  • 19A telecommunications company wants to estimate the proportion of households that would purchase an additional telephone...

    19A telecommunications company wants to estimate the proportion of households that would purchase an additional telephone line if it were made available at a substantially reduced installation cost. Data are collected from a random sample of 500 households. The results indicate that 160 of the households would purchase the additional telephone line at a reduced installation cost. Complete parts​ (a) and​ (b) below. a. Construct a 99​% confidence interval estimate for the population proportion of households that would purchase the...

  • 2.5758 An automobile manufacturer would like to know what proportion of its customers are not satisfied...

    2.5758 An automobile manufacturer would like to know what proportion of its customers are not satisfied with the service provided by the local dealer. The customer relations department will survey a random sample of customers and compute a 99% confidence interval for the proportion who are not satisfied. (a) Past studies suggest that this proportion will be about 0.19. Find the sample size needed if the margin of the error of the confidence interval is to be about 0.015. (You...

  • A university would like to estimate the proportion of fans who purchase concessions at the first...

    A university would like to estimate the proportion of fans who purchase concessions at the first basketball game of the season. The basketball facility has a capacity of 3,600 and is routinely sold out. It was discovered that a total of 230 fans out of a random sample of 500 purchased concessions during the game. Construct a​ 95% confidence interval to estimate the proportion of fans who purchased concessions during the game.

  • answer is not 194 A restuarant would like to estimate the proportion of tips that exceed...

    answer is not 194 A restuarant would like to estimate the proportion of tips that exceed 18% of its dinner bills. Without any knowledge of the population proportion, determine the sample size needed to construct a 97% confidence interval with a margin of error of no more than 6% to estimate the proportion. A restuarant would like to estimate the proportion of tips that exceed 18% of its dinner bills. Without any knowledge of the population proportion, determine the sample...

  • Suppose a hospital would like to estimate the proportion of patients who feel that physicians who...

    Suppose a hospital would like to estimate the proportion of patients who feel that physicians who care for them always communicated effectively when discussing their medical care. A pilot sample of 40 patients found that 22 reported that their physician communicated effectively. Determine the additional number of patients that need to be sampled to construct a 99​% confidence interval with a margin of error equal to 8​% to estimate this proportion. the additional patients that need to be sampled is...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT