Practice Quiz Week 4

Practice Quiz Week 4 - Math 221 Quiz Review for Weeks 3 and...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Math 221 Quiz Review for Weeks 3 and 4 1. State whether the variable is discrete or continuous. The # of keys on each student's key chain. 2. Decide whether the experiment is a binomial experiment. Explain why by citing the properties of binomial experiments. Testing a pain reliever using 20 people to determine if it is effective. The random variable represents the number of people who find the pain reliever to be effective. 3. Use the binomial probability distribution to answer the following probability questions. According to government data, the probability that an adult under 35 was never married is 25%. In a random survey of 10 adults under 35, what is the probability that: Exactly 5 were never married? 4. Use the binomial probability distribution to answer the following probability questions. According to government data, the probability that an adult under 35 was never married is 25%. In a random survey of 10 adults under 35, what is the probability that: No more than two were never married? 5. True or False: Given the basic rules of Probability, P(A) can be equal to negative 0.18 or - 18%. 6. We have the random variable X = {3, 6} with P(3) = .15 and P(6) = .85. Find E(X). 7. Use the binomial probability distribution to answer the following probability questions. According to government data, the probability that an adult under 35 was never married is 25%. In a random survey of 10 adults under 35, what is the probability that: Between 4 and 6 were never married (inclusive)? 8. Use the Poisson probability table in the back of your text to answer the following probability questions. Amazon.com receives an average of 5 sales per second through their Internet site. What is the probability that: They will get exactly 8 sales during the next second? 9.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/11/2010 for the course MATH 221 taught by Professor Forgot during the Spring '09 term at DeVry Addison.

Page1 / 5

Practice Quiz Week 4 - Math 221 Quiz Review for Weeks 3 and...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online