MATH 221 Week 5 Quiz
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1. (TCO 4) How many ways can an EMT union committee of 5 be chosen from 25 EMTs?
2. (TCO 4) Which of the following cannot be a probability?
3. (TCO 4) List the sample space of rolling a 6 sided die.
4. (TCO 4) What is the probability of choosing a queen on the 2nd draw if the first was a queen (without replacement)?
5. (TCO 4) A respiratory class has 33 women and 18 men. If a student is chosen randomly to be the team leader, what is the probability the student is a woman?
6. (TCO 4) Compute the following: 3! ÷ (0! * 3!)
7. (TCO 5) Decide whether the experiment is a binomial, Poisson, or neither based on the information given. A car towing service company averages two calls per hour. We’re interested in knowing the probability that in a randomly selected hour they will receive a call.
8. (TCO 5) Given a Poisson distribution with mean = 4. Find P(X < 3).
9. (TCO 5) Given the random variable X = {7, 8} with P(7) = 0.7 and P(8) = 0.3. Find E(X).
10. (TCO 5) If X = {1, 2, 3, 4, 5, 6} and P(1) = 0.2, P(2) = 0.2, P(3) = 0.2, P(4) = 0.2, P(5) = 0.2, and P(6) = 0.2, can distribution of the random variable X be considered a probability distribution?
11. (TCO 5) If X = {1, 2, 3, 4, 5, 6} and P(1) = 0.3, P(2) = 0.2, P(3) = 0.1, P(4) = 0.1, P(5) = 0.1, and P(6) = 0.3, can distribution of the random variable X be considered a probability distribution?
12. (TCO 5) The weight of a box of Cheerios represents what kind of distribution?
13. (TCO 5) Your baby’s weight represents what kind of distribution?
14. (TCO 5) The number of patients donating blood in a day represents what kind of distribution?
1. (TCO 5) We have a binomial experiment with p = 0.6 and n = 2.
(1) Set up the probability distribution by showing all x values and their associated probabilities.
(2) Compute the mean, variance, and standard deviation
2. (TCO 4) What is the probability that the student carries a credit card given he's a sophomore?
Class 
Credit Card Carrier 
Not a Credit Card Carrier 
Total 

Freshman 
33 
27 
60 
Sophomore 
6 
34 
40 
Total 
39 
61 
100 
3. (TCO 4) Some students were asked if they carry a credit card. Here are their responses.
Class 
Credit Card Carrier 
Not a Credit Card Carrier 
Total 

Freshman 
33 
27 
60 
Sophomore 
6 
34 
40 
Total 
39 
61 
100 
What is the probability that the student is a sophomore?
4. (TCO 4) What is the probability that the student is a sophomore and doesn't carry a credit card?
Class 
Credit Card Carrier 
Not a Credit Card Carrier 
Total 

Freshman 
33 
27 
60 
Sophomore 
6 
34 
40 
Total 
39 
61 
100 
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1. (TCO 1) An Input Area (as it applies to Excel 2010) is defined as______.
2. (TCO 1) In Excel 2010, a sheet tab ________.
3. (TCO 1) Which of the following best describes the AutoComplete function?
4. (TCO 1) Which of the following best describes the order of pre....

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1. (TCO 1) What method of data collection would you use to collect data for a study of the salaries of college professors at a particular college?
2. (TCO 2) There is a relationship between smoking cigarettes and getting emphysema. This statement describes
3. (TCO 2) The co....

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Statistical Concepts:
· Data Simulation
· Confidence Intervals
· Normal Probabilities
Short Answer Writing Assignment
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