1. The number of gallons of ice cream ordered at JJ Ice Cream on a hot summer day has the following probability density function f(x)= 1.5.x (200-x) 106 for 0 ≤ x ≤ 100 and 0 otherwise. a) What is the probability that X > 50? b) What is the probability that X < 50? c) What is the probability that 25 < X < 75? d) What is the expected value of X (E(X))? e) What is the expected value of X - 5? f) What is the expected value of 6X? g) What is the expected value of x² h) What is the probability that X is less than its expected value? i) What is the expected value of

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1. The number of gallons of ice cream ordered at JJ Ice Cream on a hot summer day has the following
probability density function
f(x)=
1.5-x-(200-x)
106
for
0 ≤ x ≤ 100
and 0 otherwise.
a) What is the probability that X > 50?
b) What is the probability that X < 50?
c) What is the probability that 25 < X < 75?
d) What is the expected value of X (E(X))?
e) What is the expected value of X - 5?
f) What is the expected value of 6X?
g) What is the expected value of
x²
h) What is the probability that X is less than its expected value?
i) What is the expected value of
x²+3x+1
?
i) What is the 70th percentile of X?
k) What is the probability that X is within 30 of its expected value?
1) What is the probability that X = 71?
Transcribed Image Text:1. The number of gallons of ice cream ordered at JJ Ice Cream on a hot summer day has the following probability density function f(x)= 1.5-x-(200-x) 106 for 0 ≤ x ≤ 100 and 0 otherwise. a) What is the probability that X > 50? b) What is the probability that X < 50? c) What is the probability that 25 < X < 75? d) What is the expected value of X (E(X))? e) What is the expected value of X - 5? f) What is the expected value of 6X? g) What is the expected value of x² h) What is the probability that X is less than its expected value? i) What is the expected value of x²+3x+1 ? i) What is the 70th percentile of X? k) What is the probability that X is within 30 of its expected value? 1) What is the probability that X = 71?
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