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22 June, 02:10

ABC trucking company realize that on an annual basis the distance traveled is normally distributed with a mean of 50,000 miles and a standard deviation of 12,000 miles using a normal distribution what is the probability that A randomly selected truck travels between 34,000 38000 miles

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  1. 22 June, 05:05
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    0.7589

    Explanation:

    P (34000<=x<=38000)

    P (34000-50000 / 12000) < = z < = 38000-50000 / 12000)

    P (-16000/12000) < = z < = - 12000/12000)

    P (z<=-1.33) - p (z<=-1.00)

    =0.9176 - 0.1587 (using standard normal table)

    =0.7589
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