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24 December, 18:43

It takes an average of 22 weeks for someone over 55 to find a new job, compared with 16 weeks for younger workers. assume the probability distributions are normal and that the standard deviation is 2 weeks for both distributions.

a. what is the probability that it takes a worker over the age of 55 more then 19 weeks to find a job.

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  1. 24 December, 19:24
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    (a) someone over 55

    mean, mu = 22

    standard deviation, sigma = 2

    X=19

    Z (X) = (X-mu) / sigma = (19-22) / 2=-1.5

    P (x>X) = 1-P (x
    Therefore probability for a 55-year old to find a job in over 19 weeks is 0.9332
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