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Answer (Choose 1 answer)
B. 0.89
☐ A
(See picture)
A. 0.68
☐ C
☐ D
C. 0.51
☐ E
D. 0.76
E. 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
f(x)
,0 < x < 1,
, elsewhere.
= 2 x 1x < 2,
0
Find the probability that over a period of one
year, a family runs their vacuum cleaner less
than 120 hours
FUO.sh
sh the exam.
