STUDY, STUDY, STUDY!

TEST TOMORROW! CHAPTERS 14,15,16,17!

This test is tough...make sure you're prepared! If you aren't sure what you're doing, it's going to be tough to finish in time; it's of the utmost importance that you review, study, and come with a solid understanding!

ALL OF YOU WHO WERE ABSENT WILL BE TAKING THE TEST. BE READY.

Here's lots of info about the test to narrow down your focus...

Part 1: Vocab Matching (20 points):

• There are 10 vocabulary words with 10 definitions (so no doubles, no extras)
• You are expected to finish this in about 10 minutes...make sure you know your stuff!
• Some words to know...conditional probability, expected value, geometric probability, binomial probability...

Part 2: Multiple Choice (7 questions, 3 points each):

• Find probabilities with a contingency table/two way table (like the Titanic table)
• Conditional Probability
• "At least 1" problems
• Combining random variables (mean and standard deviation)
• Remember that homework we had, over a weekend, that dealt with playing a game twice and finding the sum of the two scores? Study that worksheet...
• Tree diagrams 
• Venn Diagrams

Part 3: Free Response (26 points):

• Geometric and binomial probability
• Expected value and standard deviation of a probability model (we just use the calculator for Sx)
• Interpret expected value
• Combining random variables--check out #33, the cereal problem, in chapter 16 (all of it!)
• Using a Normal model

Here's an example that we did today in class for those of you who were absent:

The amount of money Dayjah raises for senior assessments is Normally distributed with a mean of $150 and a standard deviation of $12. The amount Jason raises is Normally distributed with a mean of $200 and a standard deviation of $15. The amounts they collect are independent.

a. Find the mean and standard deviation for how much more money Jason raises.

b. What is the probability that Dayjah raises more money than Jason?

And lastly, here are the answers to #20 on the homework:

a.) 0.201

b.) 0.453

c.) 0.171

d.) 0.989