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24 May, 09:43

A Department of Transportation report about air travel found that nationwide, 76% of all flights are on time. Base the following questions on 125 randomly selected flights. You may assume the only outcomes are that a flight is either late or is on time. (For all probabilities round to tenth of a percent) a) How many flights would you expect to be late

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  1. 24 May, 12:00
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    30 flights are expected to be late.

    Step-by-step explanation:

    Consider the provided information.

    A Department of Transportation report about air travel found that nationwide, 76% of all flights are on time.

    That means 100-76% = 24% of all flights are not on time.

    125 randomly selected flights.

    We need to find flights would you expect to be late.

    Flight expect to be late E (x) = nq

    Here n is 125 and the probability of late is 24 or q = 0.24

    Thus substitute the respective values in the above formula.

    Flight expect to be late E (x) = 125 * 0.24 = 30

    Hence, the 30 flights are expected to be late.
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