Stats

Running times for 400 meters is usually distributed for young men between 18 and 30 years of age with a mean of 93 seconds and a standard deviation of 16 seconds. What percent of runners with finish after 110 minutes?

  1. 👍 0
  2. 👎 0
  3. 👁 109
asked by Erin
  1. so close to zero that you couldn't tell the difference
    ... unless, of course, you mean seconds instead of minutes

    110 seconds is one second above one standard deviation from the mean

    find the z-score (number of standard deviations from the mean)
    ... and use a table to find the percentage

    1. 👍 0
    2. 👎 0
    posted by R_scott

Respond to this Question

First Name

Your Response

Similar Questions

  1. Stats

    Running times for 400 meters are Normally distributed for young men between 18 and 30 years of age with a mean of 93 seconds and a standard deviation of 16 seconds. Thus, 99.7% of running times are approximately between Need help

    asked by Lisa on February 12, 2017
  2. statistics

    The heights of women aged 20 to 29 follow approximately the N (64, 4) distribution. Men the same age have heights distributed as N (69.8, 1.1). What percent of young women are taller than the mean height of young men?

    asked by help on October 10, 2012
  3. Statistics

    Suppose the heights of women aged 20 to 29 follow approximately the N(66.7, 2.4) distribution. Also suppose men the same age have heights distributed as N(70.5, 2.2). What percent (± 0.1) of young men are shorter than average

    asked by Kelly on November 10, 2011
  4. Math

    A running track has 8 lanes each a meter wide.Each"straight" is 100 meters long. The distance around the track for someone running in the middle of the inside lane is 400 meters. What is the distance around the track for someone

    asked by Bob on October 5, 2013
  5. math

    There is a diagram of a running track. The track is made up of two straights and two semicircles. The radius of each semicircle is 35 meters. The length of the outer perimeter of the entire running track is 400 meters. Find the

    asked by Melanie on May 19, 2016
  6. Financial Math

    A young executive deposits $400 at the end of each month for 9 years and then increases the deposits. If the account earns 6%, compounded monthly, how much (to the nearest dollar) should each new deposit be in order to have a

    asked by Tom Newin on September 25, 2014
  7. finite math

    A young executive deposits $400 at the end of each month for 7 years and then increases the deposits. If the account earns 7.2%, compounded monthly, how much (to the nearest dollar) should each new deposit be in order to have a

    asked by distressed on April 30, 2011
  8. math

    A young executive deposits $400 at the end of each month for 7 years and then increases the deposits. If the account earns 7.2%, compounded monthly, how much (to the nearest dollar) should each new deposit be in order to have a

    asked by worried on April 30, 2011
  9. English

    1. You don't have to go there. 2. You have not to go there. (In British English, is #2 the same as #1?) 3. There were five men in the room. One was old and the others were young. 4. There were five men in the room: One was old and

    asked by rfvv on December 1, 2016
  10. math

    In the 400 meter dash runners stay in their lanes the entire distance around the track. If the runners would all start at the same line (the finish line) only the runner in lane 1 would be running 400 meters. Everyone else would

    asked by Abbie on August 1, 2016

More Similar Questions