a) Complete the table above with the cumulative probability distribution for actual patent life (F(y) = P(Y≤ y)). b) What is the probability that the actual patent life of a random drug is 6 years or less? c) What is the probability that the actual patent life of a random drug is more than 8 years? Show this in two ways: i. using the probability distribution for Y ii. using the cumulative probability distribution for Y, and applying our probability of comple- ments rule

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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The maximum patent life for a drug is 17 years. Subtracting the length of time required by the FDA
for testing and approval of the drug provides the actual patent life for the drug that is, the length
of time that the company has to recover research and development costs and to make a profit. The
distribution of the lengths of actual patent lives for new drugs is given below, where Y is a random
variable representing actual patent life of a drug (in years):
y
P(Y=y)
F(y)
4 5 6 7 8 9 10 11
0.06 0.08 0.11 0.15 0.22 0.18 0.12 0.08
a) Complete the table above with the cumulative probability distribution for actual patent life
(F(y) = P(Y ≤ y)).
b) What is the probability that the actual patent life of a random drug is 6 years or less?
c) What is the probability that the actual patent life of a random drug is more than 8 years? Show
this in two ways:
i. using the probability distribution for Y
ii. using the cumulative probability distribution for Y, and applying our probability of comple-
ments rule
Transcribed Image Text:The maximum patent life for a drug is 17 years. Subtracting the length of time required by the FDA for testing and approval of the drug provides the actual patent life for the drug that is, the length of time that the company has to recover research and development costs and to make a profit. The distribution of the lengths of actual patent lives for new drugs is given below, where Y is a random variable representing actual patent life of a drug (in years): y P(Y=y) F(y) 4 5 6 7 8 9 10 11 0.06 0.08 0.11 0.15 0.22 0.18 0.12 0.08 a) Complete the table above with the cumulative probability distribution for actual patent life (F(y) = P(Y ≤ y)). b) What is the probability that the actual patent life of a random drug is 6 years or less? c) What is the probability that the actual patent life of a random drug is more than 8 years? Show this in two ways: i. using the probability distribution for Y ii. using the cumulative probability distribution for Y, and applying our probability of comple- ments rule
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d) Plot the probability distribution of Y on the graph below, making sure to label axes appropriately:
0.25
0.20
0.15
0.10
0.05
0.00
1.00
0.80
0.60
0.40
0.20
4
e) Plot the cumulative probability distribution of Y on the graph below, making sure to label axes
appropriately:
0.00
5
4
6
5
7
6
8
7
.00
9 10 11
8
9
10 11
Transcribed Image Text:d) Plot the probability distribution of Y on the graph below, making sure to label axes appropriately: 0.25 0.20 0.15 0.10 0.05 0.00 1.00 0.80 0.60 0.40 0.20 4 e) Plot the cumulative probability distribution of Y on the graph below, making sure to label axes appropriately: 0.00 5 4 6 5 7 6 8 7 .00 9 10 11 8 9 10 11
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