Results 1 to 2 of 2

Math Help - Reasonably likely 2nd

  1. #1
    Junior Member
    Joined
    Jul 2008
    Posts
    53

    Reasonably likely 2nd

    At a large publishing company 31 percent of the workers are proof readers. 16 employees are randomly selected for a special project.

    What would be the reasonably likely numbers of proof readers in this sample of 16 employees?

    Again, i tried the z score 1.96 but it seems to be wrong.

    all in all, i had 1.3561 and 8.5639 as solutions
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Flow Master
    mr fantastic's Avatar
    Joined
    Dec 2007
    From
    Zeitgeist
    Posts
    16,948
    Thanks
    5
    Quote Originally Posted by makaveli89 View Post
    At a large publishing company 31 percent of the workers are proof readers. 16 employees are randomly selected for a special project.

    What would be the reasonably likely numbers of proof readers in this sample of 16 employees?

    Again, i tried the z score 1.96 but it seems to be wrong.

    all in all, i had 1.3561 and 8.5639 as solutions
    Let X be the random variable number of proof readers.

    "large" means you can use the binomial distribution.

    X ~ Binomial(n = 16, p = 0.31).

    E(X) = .....

    Alternatively, you might prefer to find the value of x that makes Pr(X = x) largest.
    Follow Math Help Forum on Facebook and Google+

Search Tags


/mathhelpforum @mathhelpforum