8th Grade Probability GMS

Outcomes

100

You have 5 different shirts, 3 different pants, and 4 pairs of shoes. How many different outfits can be made?

60 outfits

200

At an ice-cream stand, you can buy a small or medium cone. The flavors are chocolate, vanilla, strawberry, cookies n cream, and banana split. How many different ice-cream combinations are possible?

10

300

How many outcomes are possible when picking a card from a standard deck and tossing a fair coin?

104

400

How many possible 7 digit phone numbers can be made if the first digit cannot be zero and numbers can repeat?

9,000,000

500

You need to create a 3 digit password using only numbers and no number can be repeated. How many possible passwords can be made?

720

Theoretical

100

What's the probability of not rolling a 3 on a fair die?

5/6

200

What's the probability of getting a sum of 13 when rolling a pair of dice?

0

300

What's the probability of drawing a heart from a standard deck of cards and rolling an even number with a regular die?

1/8

400

What's the probability of drawing the 10 of diamonds or a spade from a standard deck of cards?

7/26

500

What's the probability of rolling a pair of dice and getting less than a sum of five?

1/6

Experimental

100

What's the experimental probability of getting tails if you tossed a coin 60 times and it landed on tails 25 times?

5/12

200

If you roll a die 72 times, how many times would you expect it to land on 5?

12 times

300

You got 3 problems wrong out of 20 questions. How many problems do you predict you would miss if you answered 160 questions?

24

400

A spinner is equally divided into 7 colors: red, green, blue, orange, yellow, purple, and black. The spinner is spun 59 times and landed on purple 8 times. Is the experimental probability greater or less than the theoretical probability of landing on purple?

less than

500

There are 4 tan socks in a sample of 20 individual socks. About how many pairs of tan socks can I expect in my drawer of 64 socks?

6 pairs

Independent Events

100

A coin is tossed 3 times. What is the probability of getting heads each time?

1/8

200

You roll a die and toss a coin. What's the probability of getting a prime number and a tails?

1/4

300

You purchase a song from iTunes and then your friend buys the same song. Are these events independent or dependent?

independent

400

There are 4 red, 5 green, and 2 blue marbles in a bag. What's the probability of picking a red and, after replacement, picking a green?

20/121

500

Spinner A is divided into 3 equal segments labeled 1, 2, and 3. Spinner B is divided into 4 equal segments labeled 1, 2, 3, and 4. What's the probability of spinning both spinners and getting a sum of 5?

1/4

Dependent Events

100

Using a standard deck of cards, what's the probability of drawing two hearts without replacing cards?

1/17

200

There are 10 orange, 1 purple, and 3 pink marbles in a bag. What's the probability of drawing purple and, without replacement, drawing another purple?

0

300

You and your friend buy a movie from Best Buy. Are these events independent or dependent?

dependent

400

There are 5 green, 4 red, and 2 yellow marbles in a bag. What's the probability of drawing a yellow and then a red without replacement?

4/55

500

Using a standard deck of cards, what's the probability of drawing a diamond and, without replacing it, a club?

13/204