Chapter 4: Q. 73 (page 288)
Complete the PDF and answer the questions.
a. Find the probability that
b. Find the expected value.
Short Answer
(a) .
(b) The expected value is.
Chapter 4: Q. 73 (page 288)
Complete the PDF and answer the questions.
a. Find the probability that
b. Find the expected value.
(a) .
(b) The expected value is.
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Get started for freeUse the following information to answer the next six exercises: On average, a clothing store gets customers per day.
What is the probability that the store will have fewer than customers in the first two hours?
What is the probability the baker will sell more than one batch?
According to a recent Pew Research poll, 75% of millenials (people born between 1981 and 1995) have a profile on a social networking site. Let X = the number of millenials you ask until you find a person without a profile on a social networking site.
a. Describe the distribution of X.
b. Find the (i) mean and (ii) standard deviation of X.
c. What is the probability that you must ask ten people to find one person without a social networking site?
d. What is the probability that you must ask 20 people to find one person without a social networking site?
e. What is the probability that you must ask at most five people?
What values does take on?
We know that for a probability distribution function to be discrete, it must have two characteristics. One is that the sum of the probabilities is one. What is the other characteristic?
Use the following information to answer the next five exercises: Javier volunteers in community events each month. He does not do more than five events in a month. He attends exactly five events of the time, four events of the time, three events of the time, two events of the time, one event of the time, and no events 5% of the time.
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