1- Online Course Selection Roughly 1 in 6 students enrolled in higher education took at least one online course last fall. Choose 5 enrolled students at random. Find the probability that a. All 5 took online courses b. None of the 5 took a course online c. At least 1 took an online course

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1- Online Course Selection Roughly 1 in 6 students enrolled in higher education took at least
one online course last fall. Choose 5 enrolled students at random. Find the probability that
a. All 5 took online courses
b. None of the 5 took a course online
c. At least 1 took an online course
2- Education Level a Smoking At a large factory, the employees were surveyed and classified
according to their level of education and whether they smoked. The data are shown in the table.
Educational level
Not high
High
school
College
graduate
school
Smoking habit
Smoke
graduate
graduate
14
19
Do not smoke
18
7
25
If an employee is selected at random, find these probabilities.
a. The employee smokes, given that he or she graduated from college.
b. Given that the employee did not graduate from high school, he or she is a smoker.
3- Credit Cards A large retail company encourages its employees to get customers to apply for
the store credit card. Below is the distribution for the number of credit card applications received
per employee for an 8-hour shift.
4
0.08 0.02
1
Р/X) 0.27
0.28
0.20
0.15
What is the probability that an employee will get 2 or 3 applications during any given
shift?
а.
b. Find the mean, variance, and standard deviation for this probability distribution.
Transcribed Image Text:1- Online Course Selection Roughly 1 in 6 students enrolled in higher education took at least one online course last fall. Choose 5 enrolled students at random. Find the probability that a. All 5 took online courses b. None of the 5 took a course online c. At least 1 took an online course 2- Education Level a Smoking At a large factory, the employees were surveyed and classified according to their level of education and whether they smoked. The data are shown in the table. Educational level Not high High school College graduate school Smoking habit Smoke graduate graduate 14 19 Do not smoke 18 7 25 If an employee is selected at random, find these probabilities. a. The employee smokes, given that he or she graduated from college. b. Given that the employee did not graduate from high school, he or she is a smoker. 3- Credit Cards A large retail company encourages its employees to get customers to apply for the store credit card. Below is the distribution for the number of credit card applications received per employee for an 8-hour shift. 4 0.08 0.02 1 Р/X) 0.27 0.28 0.20 0.15 What is the probability that an employee will get 2 or 3 applications during any given shift? а. b. Find the mean, variance, and standard deviation for this probability distribution.
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