Probability Statistics

Question 1

What is the size of the sample space (ie what is n)?

Accepted Answer

n = 8

Question 2

What is the probability of getting at least 2 heads? (Hint - consider the sample space - TTT, TTH, THT etc)

Accepted Answer

0.5

Question 3

What is the probability that at least one die shows a 1?

Accepted Answer

11 in 36

Question 4

What is the size of the sample space?

Accepted Answer

36

Question 5

What is the probability that the sum of both dice equals 3?

Accepted Answer

0.055 (1 in 18)

Question 6

If you choose an answer to this question at random, what is the chance you will be correct?

Accepted Answer

25%, 0%, 25%, 50%

Question 7

If you instead roll 3 dice, what is the new sample space size?

Accepted Answer

216

Question 8

The first two flips both came up heads. Based on this, what is the probability the next coin flip will be tails?

Accepted Answer

0.5

Questions 8