3. The number of cars sold (x) in a day at Smitty's Auto Sales is described by the probability distribution in the following table: x | P(x) --|---- 0 | 0.18 1 | 0.39 2 | 0.24 3 | 0.14 4 | 0.04 5 | 0.01 a) Calculate the expected number of cars sold in a day. b) Compute the variance and standard deviation
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18 + 1 \times 0.39 + 2 \times 0.24 + 3 \times 0.14 + 4 \times 0.04 + 5 \times 0.01 \] \[ E(x) = 0 + 0.39 + 0.48 + 0.42 + 0.16 + 0.05 \] \[ E(x) = 1.5 \] Show more…
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