ZuoTi.Pro
Question

A recent study in Riyadh has concluded that the distance that workers daily travel to work...

A recent study in Riyadh has concluded that the distance that workers daily travel to work averages 19.3 km with a standard deviation of 5.6 km. Assuming these values correspond to the parameters of a population, a. What is the probability that a sample of 49 yields a mean less than 20 km? b. What is the value of the sample mean such that 97% of the mean above this value?

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

0 0
Add a comment
Know the answer?
Add Answer to:
A recent study in Riyadh has concluded that the distance that workers daily travel to work...
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 recent study of 100 employees of city X showed that the mean of the distance...

    A recent study of 100 employees of city X showed that the mean of the distance they traveled to work was 35.75 km. The sample standard deviation was 5 km. Find the 95% confidence interval of the true mean.

  • CLO'S 6: Setup and sest hy Exercisest In 2011, it has been found that the daily...

    CLO'S 6: Setup and sest hy Exercisest In 2011, it has been found that the daily production workers for of this company is equal to $112. A sample of 90 production workers company revealed a sample mean of S117 per day. Assuming the lude that there is an 0.05, can we conclude that tpopulation standard deviation $11.2 At α increasein the daily workers earnings? Exercises#l mean A real estate research company tracks the cost of apartment rental. The apartment rate...

  • Historically, the daily average temperature in Waterloo in November has been 2.3 degrees, with a standard...

    Historically, the daily average temperature in Waterloo in November has been 2.3 degrees, with a standard deviation of 5 degrees. Assuming daily average temperatures are normally distributed what is the probability that the daily average temperature on Nov 15 will be 5 degrees or more? Question 7 options: 0.4631 0.7054 0.025 0.2946 Question 8 (1 point) Historically, the daily average temperature in Waterloo in November has been 2.3 degrees, with a standard deviation of 5 degrees. Assuming daily average temperatures...

  • Recent study stated that if a person chewed gum, the average number of sticks of gum...

    Recent study stated that if a person chewed gum, the average number of sticks of gum he or she chewed daily was 8. To test the claim, a researcher selected a random sample of 36 gum chewers and found the mean number of sticks of gum chewed per day was 9. The standard deviation of the population is 1. What would your conclusion be if the p-value of the test is equal to 0.00?

  • Cell Phone Lifetimes A recent study of the lifetimes of cell phones found the average is...

    Cell Phone Lifetimes A recent study of the lifetimes of cell phones found the average is 24.3 months. The standard deviation is 2.6 months. If a company provides its 32 employees with a cell phone, find the probability that the mean lifetime of these phones will be less than 23.7 months. Assume cell phone life is a normally distributed variable, the sample is taken from a large population and the correction factor can be ignored. Round the final answer to...

  • QUESTION 6 The do-it-yourself (DIY) consumer movement has had a profound impa A recent study conducted...

    QUESTION 6 The do-it-yourself (DIY) consumer movement has had a profound impa A recent study conducted by the centre for consumer research examined various trails of p ct on the retailing business. ersons ssified as "do-it-yourselves" and 'non-do-it-yourselves". One factor considered age. Because younge do-it-yourselves to be younger. The age (in years) of the people in the two groups from the study are summarised as follows: r people are generally healthier but less efficient, it is reasonable to expect Sample...

  • A recent study by the Island Resort Taxi Drivers Association showed that the mean fare charged...

    A recent study by the Island Resort Taxi Drivers Association showed that the mean fare charged for service from the beach to the airport is $29 and the standard deviation is $4.5. We select a sample of 18 fares. Use Appendix B.1 for the z-values. a. What is the likelihood that the sample mean is between $26 and $31? (Round the z-value to 2 decimal places and the final answer to 4 decimal places.) Probability             b. What must...

  • 1.  A study is is taken to find the mean distance commuters drove to work in a...

    1.  A study is is taken to find the mean distance commuters drove to work in a large city. We want an error margin of no more than 2.0 km , 95% confidence, and we use an estimate of 5.9 km for the standard deviation. How large would a minimum sample need to be? 2. It is claimed that 20% of all people eat fish every week. We take a sample of 500 people and 85 report that they eat fish...

  • One part of a recent study captured the daily calorie inteake of 114 elite male Canadian athletes...

    One part of a recent study captured the daily calorie inteake of 114 elite male Canadian athletes at 8 different training centers acrossed the nation. The mean number of calories per day these men consumed was 3077 kcal/d and the standard deviation was 987 kcal/d. The reconmended intake is 3421.7 kcal/d. Determine if we should conclude that elite male Candian athletes don't get enough daily calories on average at significance level 0.05. The test statistic is _____ (to four decimal...

  • home / study / math / statistics and probability / statistics and probability questions and answers...

    home / study / math / statistics and probability / statistics and probability questions and answers / a carpet company advertises that it will deliver your carpet within 15 days of purchase. a ... Question: A carpet company advertises that it will deliver your carpet within 15 days of purchase. A sample... (3 bookmarks) A carpet company advertises that it will deliver your carpet within 15 days of purchase. A sample of 49 past customers is taken. The average delivery...

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
ADVERTISEMENT