How do I solve for 5(d)? The solutions for part (a) (b) (c) are provided.

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5. (20 points) The number of automobiles (denoted by the random variable X) sold weekly at a certain dealership is a random variable with expected value 16. (a) (3 points) Give an upper bound to the probability that next week's sales exceed 18. For parts (b) and (c), suppose in addition that the variance of the number of automobiles sold weekly is 9. (b) (5 points) Give an upper bound to the probability that next week's sales are dierent from the mean weekly sales by more than 6 cars. (0) (5 points) Give a lower bound to the probability that next week's sales are between 10 and 22, inclusively. (d) (7 points) Suppose it is known that for any t > 0, E [gm16'] 18 ) 18) 18) 6 )