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(Choose 1 answer)
☐ A
(See picture)
A. None of the other choices
is correct
The total number of hours, measured in units of
100 hours, that a family runs a vacuum cleaner
over a period of one year is a continuous random
variable X that has the density function
☐ D
B. 0.529
☐ E
C. 0.375
D. 0.478
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E. 0.915
FUO.sh
sh the exam.
x
2
,0 < x < 1,
x1x < 2,
f(x)
=
0
, elsewhere.
Find the probability that over a period of one
year, a family runs their vacuum cleaner be-
tween 50 and 100 hours.
