Probability

Probability Intro

100

State whether the event is impossible, unlikely, as likely as not, likely or certain: rolling 2 number cubes and getting a sum of 2

unlikely

200

State whether the event is impossible, unlikely, as likely as not, likely, or certain: guessing the answer to a true/false question correctly

as likely as not

300

State whether the event is impossible, unlikely, as likely as not, likely, or certain: drawing a black marble from a bag containing 2 blue, 3 yellow, and 4 white marbles

impossible

400

The probability of Andy's soccer team winnng the next game is (7/10). What is the probability of Andy's team not winning the next game?

(3/10)

500

A bag contains 3 green marbles, 7 blue marbles, and 2 black marbles. The probability of randomly picking a green marble is (1/4). What is the probability of not picking a green marble?

(3/4)

Experimental Probability

100

Carl is conducting a servey for the school paper. He finds that 7 students have no pets, 15 students have one pet, and 9 students have at least one pet. What is the experimental probability that the next student Carl asks will not have a pet?

(7/31)

200

During her ride home from school, Dana sees 15 carrs driven by men and 34 cars driven by women. What is the experimental probability that the next car Dana sees will be driven by a man?

(15/49)

300

In a soccer shoot-out, Bryan made 4 out of 9 goals. What is the experimental probability that he will make the next shot?

(4/9)

400

It has rained on the last 2 out of 10 Fourth of July parades in Gary. What is the experimental probability that it will rain this year?

(1/5)

500

Claudia finds that the experimental probability of her cat waking her between 5:00 A.M. and 6:00 A.M is (8/11). About what percent of the time does Claudia's cat not wake her between 5:00 A.M. and 6:00 A.M.? Write are a fraction, decimal and percent.

(3/11), 27%, 0.27

Sample Spaces

100

Shelly and Anthony are playing a game using a number cube and a nickle. Each player rolls the number cube and flips the coin. What are all the possible outcomes during one turn? How many outcomes are in the sample space?

H1, H2, H3, H4, H5, H6, T1, T2, T3, T4, T5, T6 12 total outcomes in the sample space

200

A yogurt shop offers 4 different flavors of yogurt and 3 different fruit toppings. How many different desserts are possible if you can choose one flavor of yogurt and one topping?

There are 12 different desserts to choose from.

300

What are the possible outcomes or answering a three question true-false test? How many outcomes are in the sample space?

TTT, TTF, TFT, TFF, FTT, FTF, FFT, FFF There are 8 possible outcomes.

400

What are the possible outcomes of tossing four different coins? How many outcomes are in the sample space?

HHHH, HHHT, HHTH, HTHH, THHH, HHTT, HTHT, HTTH, THHT, THTH, TTHH, HTTT, THTT, TTHT, TTTH, TTTT 16 possible outcomes

500

What are the possible outcomes of choosing a pair of cocaptains from the following athletes: Anna, Ben, Carol, Dan, Ed, Fran? How many possible outcomes are in the sample space?

AB, AC, AD, AE, AF, BC, BD, BE, BF, CD, CE, CF, DE, DF, EF There are 15 possible outcomes.

Theortical Probability

100

A spinner with 10 equal sectors numbered 1 through 10 is spun. Find the probability of spinning a 5.

(1/10), 0.1, 10%

200

A spinner with 10 equal sectors numbered 1 through 10 is spun. Find the probability of spinning a prime number.

(2/5), 0.4, 40%

300

You have 11 cards, each with one of the letters from the word 'mathematics'. What is the probability of drawing an 'm' from the pile of shuffled cards? Write your answer is a fraction, decimal and percent.

(2/11), 0.18, 18%

400

A package of mixed lettuce seeds contains 150 green lettuce seeds and 50 red lettuce seeds. What is the probability that a randomly selected seed will be a red lettuce seed? Write your answer as a percent.

25%

500

Eight students will give reports on novels, 9 will report on biographies, and 7 will report on history books. Wat is the probability that the first report will be a novel?

(1/3), 0.33, 33%

Suprise

100

Many's science teacher almost always introduces a new chapter by conducting an experiment. Mandy's class finished a chapter on Friday. How likely is it that Mandy can expect the teacher to conduct an experiment next week?

Since the class will be starting a new chapter, it is likely the teacher will conduct an experiment.

200

Darian made 26 of the 32 free throws he attempted. What is the experimental probability that he makes the next free throw?

(13/16)

300

There are four cards and two tiles in aboard game. The cards are labled N, S, E, and W. The tiles are numbered 1 and 2. A player randomly selects one card and one tile. What are all the possible outcomes? How many outcomes are in the sample space?

N1, N2, S1, S2, E1, E2, W1, W2 There are 8 possible outcomes.

400

Sabrina has a list of 8 CDs and 5 DVDs that she would like to buy. Her friends randomly select one of the items from the list to give her as a gift. What is the probability Sabrina's friends will select a CD? a DVD?

(8/13) they pick a CD (5/13) they pick a DVD

500

Dora is buying one flavor of frozen yogurt. She can choose from two sizes, small and large, and four flavors: berry swirl, vanilla, peach and lime. How many possible choices are there?

There are 8 possible choices.