A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • 5 years ago

The heights of a certain species of plant are normally distributed, with mean 23 cm and standard deviation 1 cm. What is the probability that a plant chosen at random will be will be between 20.5 and 25.5 cm tall?

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

    do you know about converting to standard normal and using z score?

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

    im learning it sorta

  3. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ok well the formula to convert to a value of z: \[(X-\mu)/\sigma\]

  4. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so you would have (25.5-23)/1 and (20.5-23)/1 -2.5<z<2.5

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

    then you can look up the probability on a standard normal chart. Try that and let me know if you need help

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

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

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.