7.6 Topic 6: Discrete Distributions 53. Identify each variable as discrete or continuous. (a) Number of meals cooked at home each week (b) Times in the 2018 Olympic bobsled (c) Number of boat scars on a manatee 54. Suppose the probability distribution for X = at a school is as given in the following table. number of jobs held during the past year for students 4. 3 No. of Jobs 0. Probability 0.15 0.05 0.37 0.29 ??? (a) Find the probability that a randomly selected student did not hold a job in the past year. (b) Find the probability that a randomly selected student held two or fewer jobs in the past year. (c) Find the probability that a randomly selected student held at least one job during the past year. (a) Find the expected number of jobs that students held within the past year. A Concert producer has scheduled an outdoor concert, for next Saturday. If it does not rain, the Producer expects to make $20,000 profit. If it does rain, the producer will be forced to cancel e concert and will lose $12,000. The producer has learned that the probability of rain next Saturday is 0.4. (a) Let X distribution of X. = amount of money the producer will either make or lose. Find the probability %3D (b) Find the producer's expected profit from the concert.
7.6 Topic 6: Discrete Distributions 53. Identify each variable as discrete or continuous. (a) Number of meals cooked at home each week (b) Times in the 2018 Olympic bobsled (c) Number of boat scars on a manatee 54. Suppose the probability distribution for X = at a school is as given in the following table. number of jobs held during the past year for students 4. 3 No. of Jobs 0. Probability 0.15 0.05 0.37 0.29 ??? (a) Find the probability that a randomly selected student did not hold a job in the past year. (b) Find the probability that a randomly selected student held two or fewer jobs in the past year. (c) Find the probability that a randomly selected student held at least one job during the past year. (a) Find the expected number of jobs that students held within the past year. A Concert producer has scheduled an outdoor concert, for next Saturday. If it does not rain, the Producer expects to make $20,000 profit. If it does rain, the producer will be forced to cancel e concert and will lose $12,000. The producer has learned that the probability of rain next Saturday is 0.4. (a) Let X distribution of X. = amount of money the producer will either make or lose. Find the probability %3D (b) Find the producer's expected profit from the concert.
College Algebra
7th Edition
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter9: Counting And Probability
Section9.3: Binomial Probability
Problem 2E: If a binomial experiment has probability p success, then the probability of failure is...
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Question
Number 54 part B
Transcribed Image Text:7.6
Topic 6: Discrete Distributions
53. Identify each variable as discrete or continuous.
(a) Number of meals cooked at home each week
(b) Times in the 2018 Olympic bobsled
(c) Number of boat scars on a manatee
54. Suppose the probability distribution for X =
at a school is as given in the following table.
number of jobs held during the past year for students
4.
3
No. of Jobs
0.
Probability
0.15 0.05
0.37 0.29
???
(a) Find the probability that a randomly selected student did not hold a job in the past year.
(b) Find the probability that a randomly selected student held two or fewer jobs in the past
year.
(c) Find the probability that a randomly selected student held at least one job during the past
year.
(a) Find the expected number of jobs that students held within the past year.
A Concert producer has scheduled an outdoor concert, for next Saturday. If it does not rain, the
Producer expects to make $20,000 profit. If it does rain, the producer will be forced to cancel
e concert and will lose $12,000. The producer has learned that the probability of rain next
Saturday is 0.4.
(a) Let X
distribution of X.
= amount of money the producer will either make or lose. Find the probability
%3D
(b) Find the producer's expected profit from the concert.
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