Approximately 7.8% of all people have blue eyes. Out of a random sample of 25 people, find the following (Round your answers to four decimal places.) a. What is the probability that 2 of them have blue eyes? b. What is the probability that at most 2 of them have blue eyes? c. What is the probability that less than 2 of them have blue eyes? d. What is the probability that at least 2 of them have blue eyes? e. What is the probability that more than 2 of them have blue eyes? f. Compute the expected value. g. Compute the standard deviation. h. Compute the variance.
Approximately 7.8% of all people have blue eyes. Out of a random sample of 25 people, find the following (Round your answers to four decimal places.) a. What is the probability that 2 of them have blue eyes? b. What is the probability that at most 2 of them have blue eyes? c. What is the probability that less than 2 of them have blue eyes? d. What is the probability that at least 2 of them have blue eyes? e. What is the probability that more than 2 of them have blue eyes? f. Compute the expected value. g. Compute the standard deviation. h. Compute the variance.
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 4ECP: Show that the probability of drawing a club at random from a standard deck of 52 playing cards is...
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Transcribed Image Text:Approximately 7.8% of all people have blue eyes. Out of a random sample of 25 people, find the following
(Round your answers to four decimal places.)
a. What is the probability that 2 of them have blue eyes?
b. What is the probability that at most 2 of them have blue eyes?
c. What is the probability that less than 2 of them have blue eyes?
d. What is the probability that at least 2 of them have blue eyes?
e. What is the probability that more than 2 of them have blue eyes?
f. Compute the expected value.
g. Compute the standard deviation.
h. Compute the variance.
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