A box of 1515 flashbulbs contains 22 defective bulbsbulbs. A random sample of 2 is selected and tested. Let X be the random variable associated with the number of defective bulbs in the sample. (A) Find the probability distribution of X. (B) Find the expected number of defective bulbs in the sample.
A box of 1515 flashbulbs contains 22 defective bulbsbulbs. A random sample of 2 is selected and tested. Let X be the random variable associated with the number of defective bulbs in the sample. (A) Find the probability distribution of X. (B) Find the expected number of defective bulbs in the sample.
Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter12: Probability
Section12.4: Discrete Random Variables; Applications To Decision Making
Problem 1E
Question
A box of
1515
flashbulbs contains
22
defective
bulbsbulbs.
A random sample of 2 is selected and tested. Let X be the random variable associated with the number of defective bulbs in the sample.(A) Find the probability distribution of X.
(B) Find the expected number of defective bulbs in the sample.
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