1. Find the mean & St. Dev for each. MeanSt. Dev X83 Y124

2. Find the mean & standard deviation xp(x) 40.2 70.31 120.24 150.18 180.07

3. BINOMIAL DISTRIBUTION FORMULA Section 6.3A

4. Binomial Experiment - BINS Binary? There are two possible outcomes – success and failure Independent? Trials must be independent Number? The number of trials must be fixed – out of n…. Success? On each trial the probability of success must be the same

5. Let E be the event that a person goes out shopping on Black Friday. Find the probability distribution for a sample of 3 people if the P(E) =.78.

6. Probability distribution of going shopping on black Friday for 4 people. P(E) =.78

7. Let’s Develop the formula!

8. Binomial Distribution where

9. The survival rate for a risky operation is 80%. What is the probability that exactly 4 of the next 5 patients survive?

10. USA today stated that 45% of Americans know somebody who became addicted to a drug other than alcohol. If we randomly ask 15 people, what’s the probability that exactly 3 were addicted?

11. What’s the probability that at least 12 are addicted?

12. What the probability that less than 3 are addicted?

13. 90% of the trees planted by a landscaper will survive. If 10 trees are planted, what’s the probability more than eight survive?

14. The probability that a person will subscribe to Statistics Monthly is 48%. Find the probability that out of a group of seven, at least one person subscribes.

15. There are charts as well – but only for some probabilities so you need to know the formula.

16. Homework Worksheet