+ Reply to Thread
Results 1 to 4 of 4

Thread: Equation needed

  1. #1
    Points: 1,225, Level: 19
    Level completed: 25%, Points required for next Level: 75

    Posts
    8
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Question Equation needed



    I've been at this question for an hour, going through my notes and I just can't find the right way to do this question: According to a recent study, 38% of all women will suffer a hip fracture because of osteoporosis by the age of 85. If six women aged 85 are randomly selected, what is the probability that:
    a. none of them will suffer (or has suffered) a hip fracture due to osteoporosis?
    b. At least four of them will suffer a fracture
    c. fewer than 2 will suffer.
    I don't know any other way to figure this out other than tree diagram maybe but that would take way too long.
    If anyone knows how to solve this please tell me.

  2. #2
    TS Contributor
    Points: 6,955, Level: 55
    Level completed: 3%, Points required for next Level: 195

    Posts
    784
    Thanks
    0
    Thanked 71 Times in 70 Posts

    Re: Equation needed

    It's a binomial distribution problem, with p=.38 and n=6.

  3. #3
    Points: 138, Level: 2
    Level completed: 76%, Points required for next Level: 12

    Posts
    5
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Re: Equation needed

    what formula should I use for this the above question???

  4. #4
    Points: 3,901, Level: 39
    Level completed: 68%, Points required for next Level: 49
    SiBorg's Avatar
    Posts
    255
    Thanks
    71
    Thanked 24 Times in 22 Posts

    Re: Equation needed



+ Reply to Thread

Similar Threads

  1. Regression Equation
    By Pejoda in forum Statistics
    Replies: 9
    Last Post: 10-05-2009, 08:45 PM
  2. A Proper Name for This Equation???
    By the_gator in forum Statistics
    Replies: 1
    Last Post: 06-14-2009, 06:55 AM
  3. What's the equation for this?
    By Statattacker in forum Statistics
    Replies: 0
    Last Post: 04-12-2008, 10:39 AM
  4. regression equation
    By hobglobin in forum Psychology Statistics
    Replies: 0
    Last Post: 10-18-2006, 05:41 AM
  5. Regression equation
    By Maarten in forum Statistics
    Replies: 1
    Last Post: 03-10-2006, 09:15 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts








Advertise on Talk Stats