Intro to Probability

If you roll two dice, how many possible outcomes?

• 360

• 1

• 36

• 12

What is sample space?

• a process with an uncertain result

• a possible result of an action

• a list of all possible outcomes of an event

• a single outcome or group of outcomes

What is the sample space?

• 6 bears

• {orange, green, red, white, yellow}

• unlikely

• 2 red bears

The cafeteria is serving three kinds of sandwiches: tuna (T), chicken, (C), and peanut butter (P). They are also serving a choice of two drinks: milk (M) or water (W). Which shows the CORRECT Sample Space List of possible combinations?

• {TW, CW, PW}

• {TW, TM, TC, CW, PW}

• {TW, TM, CW, CM, PW, PM}

• {TCP, MW}

What is the sample space for choosing 1 jelly bean from a jar of 4 red, 7 blue, and 2 green jellybeans?

• {4, 7, and 2}

• {red, blue, green}

• 2 green

• 4 red

Alexandra rolls a standard six-sided die, numbered from 1 to 6. Which word or phrase describes the probability that she will roll a number between 1 and 6 (including 1 and 6)?

• unlikely

• impossible

• certain

• an equal or 50-50 chance

Dominic has a bag of candy full of 1 strawberry chew and 19 cherry chews that he eats one at a time. Which word or phrase describes the probability that he reaches in without looking and pulls out a lemon chew?

• certain

• likely

• unlikely

• impossible

Xavier has a bag of candy full of 10 strawberry chews and 10 cherry chews that he eats one at a time. Which word or phrase describes the probability that he reaches in without looking and pulls out a strawberry chew?

• an equal or 50-50 chance

• unlikely

• impossible

• likely

Using a regular 52 card deck, what is the probability of randomly drawing a 2?

• 1/4

• 1/13

• 1/26

• 1/52

Using a regular 52 card deck, what is the probability of randomly drawing a Jack or a 4?

• 2/13

• 15/52

• 1/26

• 1/2