Quantcast

A community for students. Sign up today!

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

Chena804

  • 2 years ago

3. Suppose that the volume of sound generated by heavy machinery in a factory is normally distributed, with a mean of 50 dB and a standard deviation of 10 dB. (a) What is the probability that the volume of sound measurement at a particular time (1) between 45 and 55 dB? (2) between 40 and 60 dB? (3) above 80 dB? (b) 20% of the sound volumes will be below what value? (c) There is a 99% chance that the sound volume will be below what value? If measurements are taken twice an hour during an eight hour period, (d) what is the probability that the average volume of sound measurement for th

  • This Question is Closed
  1. amistre64
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    what do you know of finding z scores?

  2. amistre64
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    and if your able to use a program or a stats calculator for this, its much simpler

  3. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Ask a Question
Find more explanations on OpenStudy

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.