Use bayes theorem to solve this problem, a paper bag contains two red balls and one blue ball. a plastic bag contains three blue balls and one red ball. a coin is tossed. if it falls heads up, the paper bag is selected and a ball is drawn. if the coin falls tails up, the plastic bag is selected and a ball is drawn. if a red ball is selected what is the probability that it came from the paper bag?

Step-by-step explanation:

Given

Probability of selecting Paper bag is equivalent to getting a head in coin i.e. 0.5 and probability of selecting Plastic bag is equivalent to getting a tail in coin i.e. 0.5

Probability of getting a red ball from Paper bag

Probability of getting a red ball from Plastic bag

If a red ball is selected Probability that it came from the paper bag

the answer

b. they are parallel and will never intersect.

she will travel a distance in the range of 3 - 11 miles