Stats--Review-Chapt03

# Stats--Review-Chapt03 - Review Chapter 3 Probability 1...

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

Review: Chapter 3: Probability 1. Concepts: (1) Event (2) Simple event (3) Sample space (4) Basic Rules for Computing Probability (a) Rule 1: Relative Frequency Approximation (b) Rule 2: Classical approach (c) Rule 3: Subjective Probabilities (5) Law of Large Numbers (6) Complementary Events (7) Compound Event (8) Independent Events and Dependent Events 2. Practicing Problems: Find the indicated probability. 1) A sample space consists of 80 separate events that are equally likely. What is the probability of each? A) 1 B) 0 C) 1/80 D) 80 2) On a multiple choice test, each question has 4 possible answers. If you make a random guess on the first question, what is the probability that you are correct? A) 4 B) 1 C) 1/4 D) 0 3) A die with 12 sides is rolled. What is the probability of rolling a number less than 11? A) 1/12 B) 10 C) 5/6 D) 11/12 4) A bag contains 6 red marbles, 3 blue marbles, and 7 green marbles. If a marble is randomly selected from the bag, what is the probability that it is blue? A) 1/3 B) 3/16 C) 1/13 D) 1/7 Answer the question, considering an event to be "unusual" if its probability is less than or equal to 0.05. 11) Is it "unusual" to get a 12 when a pair of dice is rolled? A) Yes B) No 12) Is it "unusual" to get 3 when a pair of dice is rolled? A) No B) Yes 13) A multiple choice question has 14 possible answers, only one of which is correct. Is it "unusual" to answer a question correctly if a random guess is made? A) No B) Yes Use the relative frequency approach to estimate the probability of the event. 21)

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

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

## This note was uploaded on 09/26/2011 for the course MATH 201 taught by Professor R during the Spring '11 term at Lee.

### Page1 / 5

Stats--Review-Chapt03 - Review Chapter 3 Probability 1...

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

View Full Document
Ask a homework question - tutors are online