Question

stats question. solve correctly for thumbs up. Assume that 9 mechanics are randomly selected to measure...

stats question. solve correctly for thumbs up.

Assume that 9 mechanics are randomly selected to measure the time (in seconds) they take in rotating a tire of a certain car model. It is known that distribution of all such times approximately normal. What is the probability that the average time of these 9 mechanics exceeded the population mean time by 5 seconds (the sample variance is 40 seconds)?

select correct option:

0.0226


0.0089


0.9774


0.9911
0 0
Add a comment Improve this question Transcribed image text
Know the answer?
Add Answer to:
stats question. solve correctly for thumbs up. Assume that 9 mechanics are randomly selected to measure...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

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
  • Assume that 9 mechanics are randomly selected to measure the time (in seconds) they take in...

    Assume that 9 mechanics are randomly selected to measure the time (in seconds) they take in rotating a tire of a certain car model. It is known that distribution of all such times approximately normal. What is the probability that the average time of these 9 mechanics exceeded the population mean time by 5 seconds (the sample variance is 40 seconds)?

  • First, read the article on "The Delphi Method for Graduate Research." ------ Article is posted below...

    First, read the article on "The Delphi Method for Graduate Research." ------ Article is posted below Include each of the following in your answer (if applicable – explain in a paragraph) Research problem: what do you want to solve using Delphi? Sample: who will participate and why? (answer in 5 -10 sentences) Round one questionnaire: include 5 hypothetical questions you would like to ask Discuss: what are possible outcomes of the findings from your study? Hint: this is the conclusion....

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