Explore BrainMass

Explore BrainMass

    Probability in a class and normal distributions

    This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!

    A class consist of 10 males and 30 females. If one student is randomly selected from the class what is the probability of selecting a male?
    - 1/40
    - 1/10
    - 10/30
    - 10/40

    A class consist of 10 males and 30 females. a random sample of n=3 is selected. If the first two students are both females what is the probability that the third student is a male?
    -10/37
    -10/40
    -10/38
    -8/38

    What proportion of a normal distribution is located in the tail beyond z= 1.50?

    © BrainMass Inc. brainmass.com June 4, 2020, 4:51 am ad1c9bdddf
    https://brainmass.com/statistics/normal-distribution/probability-class-normal-distributions-584153

    Solution Preview

    Answer

    P (selecting a male) = Favorable no. of cases/Total no. of cases

    ...

    Solution Summary

    The solution provides step by step method for the calculation of probabilities and normal distributions.

    $2.19

    ADVERTISEMENT