Mutually Exclusive, Two-way tables, and Or probability

What is the sample space?

• A space where you get samples

• The number of possible outcomes

• A list of all the possible outcomes

• A sample outcome

What is the sample space when you roll an 8 sided die?

• 8

• 1,2,3,4,5,6,7,8

• 1,2,3,4,5,6

• A die space

If a die is rolled one time, what is the probability that you get a 4?

• $\frac{1}{6}$

• $\frac{1}{4}$

• $\frac{4}{6}$

• $\frac{6}{6}$
  

If a die is rolled one time, what is the probability that you get a number less than 5?

• $\frac{5}{6}$

• $\frac{4}{6}$

• 0

• $\frac{1}{6}$

If one card is pulled from a standard deck of cards,

P(diamond) = ?

• $\frac{4}{52}$

• $\frac{4}{13}$

• $\frac{1}{13}$

• $\frac{13}{52}$

If one card is pulled from a standard deck of cards,

P(king) = ?

• $\frac{4}{52}$

• $\frac{1}{4}$

•  $\frac{4}{13}$ 

• $\frac{13}{52}$

A bag of marbles has five blue, three white, seven red, and nine green marbles. If one marble is selected at random,

P(white) = ?

• 3

• $\frac{3}{24}$

• $\frac{3}{5}$

• $\frac{1}{24}$

What is the complement of an event?

• the probability that the event does not happen

• the probability that the event happens twice

• the probability that someone tells me I look nice today

• the probability that an event happens

A survey found that 56% of Americans are scared of the dark. If a random American is selected, what is the probability that they are NOT scared of the dark?

• 56%

• 100%

• 44%

• 54%

What does it mean for two events to be "mutually exclusive?"

• they can happen at the same time

• they cannot happen at the same time

• they always happen at the same time

• neither of those events could ever happen