Chapter 4: Q.19 (page 283)
Find the expected value from the expected value table.
Short Answer
Expected value is
Chapter 4: Q.19 (page 283)
Find the expected value from the expected value table.
Expected value is
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a. the number of times Mrs. Plumโs cats wake her up each week.
b. the number of times Mrs. Plumโs cats wake her up each hour.
c. the number of times Mrs. Plumโs cats wake her up each night.
d. the number of times Mrs. Plumโs cats wake her up.
Define the random variable .
An emergency room at a particular hospital gets an average of five patients per hour. A doctor wants to know the probability that the ER gets more than five patients per hour. Give the reason why this would be a Poisson distribution.
Is it likely that there will be more than 20 teens killed from motor vehicle injuries on any given day in the U.S.? Justify your answer numerically.
A group of Martial Arts students is planning on participating in an upcoming demonstration. Six are students of Tae Kwon Do; seven are students of Shotokan Karate. Suppose that eight students are randomly picked to be in the first demonstration. We are interested in the number of Shotokan Karate students in that first demonstration.
a. In words, define the random variable X.
b. List the values that X may take on.
c. Give the distribution of X. X ~ _____(_____,_____)
d. How many Shotokan Karate students do we expect to be in that first demonstration?
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