Show ** ALL** work! Either write your work in the space provided or attach spreadsheets.

Please refer to Math215_Cond_Probability.ppt for questions 4 and 8. Other exam questions are review from previous chapter slides.

1. Calculate the ** sample standard deviation** for the following set of numbers.

45, 81, 26, 43, 20, 90, 450, 340, 34, 67, 11

2. For the data set shown in question #2, for which you have calculated the standard deviation, what is the **z-Score** for the number 90?

3. For the following graph, would you ** estimate** the correlation to be positive, negative or neutral. Please

4. **Event A:** Selecting a Queen from a standard deck of cards.

*The Queen is replaced back into the deck.*

**Event B:** Selecting a 2 card from the same deck of cards.

What is P(B|A), that is, the probability of event B, given that event A occurred?

Are events A and B related, meaning is event B dependent in any way on event A?

5. Calculate the ** correlation coefficient** for the following data set.

6. Henry sells boats. Find below a list of boat sales for Henry. What is the **expected value** for Henry's boat sales?

7. Calculate the probability that a standard normal random variable is between 0 and 1.55

8. **Event A:** Selecting a Jack from a standard deck of cards.

*The Jack is NOT replaced back into the deck.*

**Event B:** Selecting a 5 card from the same deck of cards.

What is P(B|A), that is, the probability of event B, given that event A occurred?

Are events A and B related, meaning is event B dependent in any way on event A?

Subject | Mathematics |

Due By (Pacific Time) | 12/17/2014 06:00 am |

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