Ask Me Help Desk

Ask Me Help Desk (https://www.askmehelpdesk.com/forum.php)
-   Math & Sciences (https://www.askmehelpdesk.com/forumdisplay.php?f=402)
-   -   PLEASE help.. STATISTICS (Normal distribution) (https://www.askmehelpdesk.com/showthread.php?t=533386)

  • Dec 10, 2010, 01:31 AM
    rej_ar
    PLEASE help.. STATISTICS (Normal distribution)
    I need a step by step solution to this:
    (The answers are already given; I just need the computations)
    Data indicates an average population weight of a fish of 40 lbs and a standard deviation of 4 lbs. Assume weight is normally distributed in the population. How probable was it to catch a tuna:
    a. greater than 50 lbs Answer: 0.62%
    b. less than 35 lbs Answer: 10.56%
    c. between 32 and 36 lbs Answer: 13.59%
    d. 36 and 48 lbs Answer: 81.85%

    Thank you so much!!
  • Dec 10, 2010, 01:35 AM
    rej_ar
    I'll be so grateful if you'll show the solution to this:
    Data indicates an average population weight of a fish of 40 lbs and a standard deviation of 4 lbs. Assume weight is normally distributed in the population. How probable was it to catch a tuna:
    a. greater than 50 lbs
    b. less than 35 lbs
    c. between 32 and 36 lbs
    d. 36 and 48 lbs
  • Dec 10, 2010, 01:45 AM
    rej_ar
    Can u help me plsss
    Data indicates an average population weight of a fish of 40 lbs and a standard deviation of 4 lbs. Assume weight is normally distributed in the population. How probable was it to catch a fish:
    a. greater than 50 lbs
    b. less than 35 lbs
    c. between 32 and 36 lbs
    d. 36 and 48 lbs
  • Dec 10, 2010, 01:51 AM
    Curlyben
    Thank you for taking the time to copy your homework to AMHD.
    Please refer to this announcement: https://www.askmehelpdesk.com/financ...-b-u-font.html
  • Dec 10, 2010, 02:09 AM
    Unknown008

    You'll have to define your variable first.

    Let X be the weight of a fish.

    Then,

    You should know what are mu and sigma.

    Then, the probability that the weight is greater than a certain value x,



    Then you look in your normal table and look for the probability associated with the z value.

    Can you use this hint and solve your problem, then post the work that you did?

  • All times are GMT -7. The time now is 08:51 PM.