Simple Probability of Two Events

There are 52 cards in a deck of cards. Two colors: red and black. 4 suits: spades, clubs, hearts, and diamonds. Each suit has a 2-10, jack, queen, king, and ace (no jokers). What is the probability of drawing a black card if you randomly drew 1 card from the deck? (Convert your answer to a decimal and round to the nearest hundredth.)

• 0.25

• 0.50

• 0.75

• 1.00

On Deal or No Deal the cases are labeled 1 - 26. If you randomly chose one case, what is the probability of you choosing the 1 million dollar case on your first pick? (Convert your answer into a percent and round to the nearest whole number.)

• 38%

• 4%

• 3%

• 26%

What is the probability of the spinner shown landing on anything but an "A"? (Convert your answer into a decimal and round to the nearest hundredth.)

• 0.25

• 0.75

• 0.50

• 0.63

Mark opened a box of animal crackers, there were 4 zebra crackers, 2 elephant cracker, 5 giraffe crackers, 3 gorilla crackers, and 8 lion crackers. If mark picked one cracker at random what is the probability that Mark would not select a lion cracker. (Convert your answer to a decimal and round to the nearest hundredth.)

• 0.36

• 0.63

• 0.50

• 0.42

There are 52 cards in a deck of cards. Two colors: red and black. 4 suits: spades, clubs, hearts, and diamonds. Each suit has a 2-10, jack, queen, king, and ace (no jokers). What is the probability of drawing a card with a diamond on it if you randomly drew 1 card from the deck? (Convert your answer to a percent and round to the nearest hundredth.)

• 10%

• 25%

• 33%

• 50%

P(A) + P(not A) = 1

• True

• False

Which of the following expressions can be used to calculate the probability of two related events occurring?

• P(event) x 2

• P(event 1) +   P(event 2)

• P(event 1) x     P(event 2)

• P(event 1 + 2)

A measurement of the likelihood of an event or events occurring on a scale of 0 to 1 is called - 

• data

• luck

• probability

• trials

The extent to which something is likely to occur is known as - 

• sample space

• an event

• probability

• data