Question

ME:Experiment 1: Select one marble out of the 12 marbles Suppose you have a bag containing 12 marbles that are numbered 1 through 6 on each blue and red. 6 are red and 6 are blue. Let A What are the chances you will get a red marble with an odd number on it? B: Observe a blue marble with an even number

Answer 1

Probability is given by the expression:

$P(A)=\frac{\text{Number of favourable outcomes}}{\text{Total number of favourable outcomes}}$

There are 3 odd numbers between 1 to 6, then there are 3 favourable outcomes:

$P(A)=\frac{3}{12}$

There are also three even numbers between 1 to 6, then for blue marbles with an even number:

$P(B)=\frac{3}{12}$