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-02. The probabilities and the number of automobiles lined up at Whitman Bridge opening time for service are Probability 0.3 0.2 0.1 0.4 On a typical day, how many automobiles (i.e. expected number of Automobiles) are expected to be lined up No. of Automobile(X) 4 at opening? a. 2.3 Carsb. 2.5 cars c. 2.6 cars d. 4.0 Cars e. None of the above please show work

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Answer #1

We should multiply probabilities with corresponding number of automobiles and then add them all to arrive at the expected number of automobiles

Expected number of automobiles = 1*0.3+2*0.2+3*0.1+4*0.4 = 2.6 cars

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