Quantcast

A community for students. Sign up today!

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

shaqadry

  • 2 years ago

If the systolic blood pressure for a certain group of obesepeople has a mean of 132 and a standard deviation of 8, find theprobability that a randomly selected obese person will have theseblood pressures. Assume the variable is normally distibuted. A. Above 130 B. Below 140 C. Between 131 and 136

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

    you need to change the values in A , B and C to standard deviations from the mean, and then use a Z table

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

    i know but i couldnt find the answer for A. the correct answer for A is 0.5987. i got 0.6368. where did i go wrong?

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

    how many std dev is 130 from 132?

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

    oh its okay i got the answer. thanks anyway for trying to help!

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

    it looks like you used 0.35 rather than 0.25 for the std dev for A

  6. 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.