In: Statistics and Probability
Exercise 1: probability Concepts
Part one: Contingency table and Probability rules
A study on speeding violation and driver age produced the following contingency table.
Speeding Age |
speeding violation last year |
No speeding violation last year |
20 -29 |
95 |
70 |
30 -39 |
101 |
97 |
40 -49 |
70 |
85 |
50 -59 |
45 |
90 |
60 -69 |
19 |
103 |
If a driver is selected at random from this sample, find the following probabilities:
Round your answers to 3 decimals
Part two: Classical probabilities, counting rules and probabilities
1. A fair coin and then a die with 6 sides are tosses find the probabilities of the six events occurring respectively
2. An urn contains 5 white ,4 black and 3 red marbles. If 3 marbles are selected from this urn.
Find the probability that at least one of the 3 marbles is black