Explore BrainMass

Explore BrainMass

    Probability

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

    1. If we know that the length of time it takes a college student to find a parking spot in the library parking lot follows a normal distribution with a mean of 3.5 minutes and a standard deviation of 1 minute, find the probability that a randomly selected college student will find a parking spot in the library parking lot in less than 3 minutes.

    a. 0.3551
    b. 0.3085
    c. 0.2674
    d. 0.1915

    2. The owner of a fish market determined that the average weight for a catfish is 3.2 pounds with a standard deviation of 0.5 pound. Assuming the weights of catfish are normally distributed, the probability that a randomly selected catfish will weigh between 3.4 and 3.7 pounds?

    a. 0.5478
    b. 0.2935
    c. 0.8413
    d. 0.1859

    3. If n = 10 and p = 0.70, then the mean of the binomial distribution is:

    a. 0.07
    b. 1.45
    c. 7.00
    d. 14.29

    © BrainMass Inc. brainmass.com June 4, 2020, 12:38 am ad1c9bdddf
    https://brainmass.com/statistics/probability/350560

    Solution Preview

    (1) z = (x - mu)/sigma

    z = (3 - 3.5)/1 = -0.5

    P(x < 3) = P(z < ...

    Solution Summary

    Complete, Neat and Step-by-step Solutions are provided.

    $2.19

    ADVERTISEMENT