3.33 Suppose a certain type of small data processing firm is so specialized that some have difficulty making a profit in their first year of operation. The probabil- ity density function that characterizes the proportion Y that make a profit is given by f(y) = Sky(1-y) (0, 2 0≤ y ≤1, elsewhere. (a) What is the value of k that renders the above a valid density function? (b) Find the probability that at most 50% of the firms make a profit in the first year. (c) Find the probability that at least 80% of the firms make a profit in the first year.

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3.33 Suppose a certain type of small data processing
firm is so specialized that some have difficulty making
a profit in their first year of operation. The probabil-
ity density function that characterizes the proportion
Y that make a profit is given by
3
Sky³ (1-y)² 0≤ y ≤ 1,
f(y) = 0,
elsewhere.
(a) What is the value of k that renders the above a
valid density function?
(b) Find the probability that at most 50% of the firms
make a profit in the first year.
(c) Find the probability that at least 80% of the firms
make a profit in the first year.
Transcribed Image Text:3.33 Suppose a certain type of small data processing firm is so specialized that some have difficulty making a profit in their first year of operation. The probabil- ity density function that characterizes the proportion Y that make a profit is given by 3 Sky³ (1-y)² 0≤ y ≤ 1, f(y) = 0, elsewhere. (a) What is the value of k that renders the above a valid density function? (b) Find the probability that at most 50% of the firms make a profit in the first year. (c) Find the probability that at least 80% of the firms make a profit in the first year.
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