It is known that 20% of a certain variety of flower bulb will not grow. If 15 bulbs are planted, the probability that: a. Exactly 12 will bloom? b. At least 4 will bloom? c. No more than 13 will bloom? d. All of them will bloom? e. Exactly 5 will not bloom? f. What is the expected number of bulbs that will bloom?
It is known that 20% of a certain variety of flower bulb will not grow. If 15 bulbs are planted, the probability that: a. Exactly 12 will bloom? b. At least 4 will bloom? c. No more than 13 will bloom? d. All of them will bloom? e. Exactly 5 will not bloom? f. What is the expected number of bulbs that will bloom?
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 11ECP: A manufacturer has determined that a machine averages one faulty unit for every 500 it produces....
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Transcribed Image Text:5. It is known that 20% of a certain variety of flower bulb will not grow. If 15 bulbs are planted, what is
the probability that:
a. Exactly 12 will bloom?
b. At least 4 will bloom?
c. No more than 13 will bloom?
d. All of them will bloom?
e. Exactly 5 will not bloom?
f. What is the expected number of bulbs that will bloom?
g. Find the variance of the number of bulbs that will bloom.
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