It's time to put what you've learned to the test, get 8 right to pass this week.
1.
Given that C = 'Cloud in January in Germany' and S = 'Snow' what does P(S|C) mean?
Choose the correct answer.
2.
How are probabilities expressed in numeric terms?
There are two correct answers.
3.
What does the symbol '|' mean in P(A | B)?
Choose the correct answer.
4.
Which of the following scenarios could be calculated with Bayes’ theorem?
There are three correct answers.
5.
In a class, 40% of the students study math and science. 60% of the students study math. What is the probability of a student studying science given he/she is already studying math?
Choose the correct answer.
6.
A bag contains 6 blue and 3 red balls. What is the probability of randomly selecting a blue ball given that you selected and removed a red ball on your first attempt?
Choose the correct answer.
7.
What do you need to know to be able to calculate conditional probability?
There are two correct answers.
8.
A jar contains black and white marbles. Two marbles are chosen without replacement. The probability of selecting a black marble and then a white marble is 0.40, and the probability of selecting a black marble on the first draw is 0.50. What is the probability of selecting a white marble on the second draw, given that the first marble drawn was black?
Choose the correct answer.
9.
A pack contains 5 blue, 3 red, and 2 black pens. What is the probability of drawing a black pen if 1 pen is drawn at random from the pack?
Choose the correct answer.
10.
The probability that it is Friday and that a worker is absent is 0.05. The probability that it is Friday is 0.2, since there are 5 days in a working week. What is the probability that a worker is absent given that today is Friday?