# Probability

The animal colony in the reseach department contains 20 male rats and 30 female rats. Of the 20 males, 15 are white and 5 spotted. Of the 30 females, 15 are white, and 15 are spotted. Suppose that you randomly select 1 rate from this colony:

a)Find the Joint probability table including the marginal probability.

b) what is the probability of obtaining 1 female

c)what is the probability of obtaining a white male

d) which selection is more likely; a spotted male or a spotted female.

e)Given that a rat is female, what is the probability that it is spotted.

https://brainmass.com/statistics/probability/probability-animal-colony-29887

#### Solution Preview

　 White Spotted Total

Male 15 5 20

Female 15 15 30

Total 30 20 50

a)Find the Joint probability table including the marginal probability.

Prob White Spotted ...

#### Solution Summary

The joint probability tables included for marginal probability are found for animal colonies.