Explore BrainMass

Explore BrainMass

    Standard distribution, deviation, etc.

    Not what you're looking for? Search our solutions OR ask your own Custom question.

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

    15. If P(A) = 0.4, P(B| A) = 0.35, P(A  B) =0.69, then P(B) =
    a. 0.14
    b. 0.43
    c. 0.75
    d. 0.59

    18. If X and Y are mutually exclusive events with P(X) = 0.295, P(Y) = 0.32, then P(XY) =
    a. 0.0944
    b. 0.6150
    c. 1.0000
    d. 0.0000

    27. For a standard normal distribution, the probability of z  0 is
    a. zero
    b. -0.5
    c. 0.5
    d. one

    28. Z is a standard normal random variable. The P(-1.96  Z  -1.4) equals
    a. 0.8942
    b. 0.0558
    c. 0.475
    d. 0.4192

    29. The weight of football players is normally distributed with a mean of 200 pounds and a standard deviation of 25 pounds. The probability of a player weighing less than 250 pounds is
    a. 0.4772
    b. 0.9772
    c. 0.0528
    d. 0.5000

    31. A population has a standard deviation of 16. If a sample of size 64 is selected from this population, what is the probability that the sample mean will be within 2 of the population mean?
    a. 0.6826
    b. 0.3413
    c. -0.6826
    d. Since the mean is not given, there is no answer to this question.

    © BrainMass Inc. brainmass.com March 4, 2021, 6:21 pm ad1c9bdddf
    https://brainmass.com/statistics/normal-distribution/standard-distribution-deviation-etc-41763

    Solution Summary

    The solution is provided in an attachment and includes explanations to the multiple choice answers and references.

    $2.49

    ADVERTISEMENT