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On hot sunny days Jane rents tubes by the lake that runs through her town. Based on previous experience she has

assigned the following probabilitiy distribution to the number of tubes she will rent on a randomly selected day.

x 25 50 75 100 Total

P(x) .16 .32 .21 .31 1.00

Find the probability expressions: (round your answers to 2 decimal places)

a. P(X = 100) ____

b. P(X< 75) ____

c. P(X > 50) ____

d. P(X < 100) ____

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