Let X be a continuous random variable with the probability density function f X ( x ) = 20 x , 3 ≤ x ≤ 7, zero elsewhere. Let Y be a Uniform( 3, 7 ) random variable. Suppose that X and Y are independent. a) Find P(min( X, Y )  5 ). b) Find E(max( X, Y )).

$53.50

step-by-step explanation:

you have to subtract the amount of money chuck earned ($72.50) by the cost of the gas for the mower ($11.25) and the new string for the trimmer he bought ($7.75).

72.50-11.25=61.25

and then subtract $61.25 by the second thing he bought (the new string for the trimmer)

61.25-7.75=53.5

so in total it's $53.50 (53 dollars and 50 cents)

good luck on your studies! : )

david edward.

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