Probability and Statistics

Find the number of ways Dash can choose an even number.

4, 3, 7, 3, 8, 5, 3, 9, 2, 6

• 4 ways

• 3 ways

• 2 ways

• 1 way

Tell whether the events are independent or dependent.

In a room there are 2 couches, 2 lamps, and 2 chairs. You wonder the chances of Jack-Jack setting a couch on fire on day 1 and then setting a lamp on fire on day 2.

• Dependent; The event on day 2 depends on what is set on fire on day 1.

• Independent; Setting something on fire on day 1 does not affect what is set on fire on day 2.

Tags

CCSS.7.SP.C.5

CCSS.7.SP.C.7

CCSS.7.SP.C.8

Mr. Incredible randomly chooses crumpled up paper from a bag. The colors of the papers are: 1 blue, 2 red, 3 purple, and 8 green. Find the probability of choosing a green paper.

• P(green) = 1/2

• P(green) = 3/4

• P(green) = 8/15

• P(green) = 4/7

Tags

CCSS.7.SP.C.5

CCSS.7.SP.C.7

Frozone randomly chooses a block from a bag. The bag contains 1 blue, 2 red, 3 purple, and 8 green blocks. Find the probability of not choosing a blue block.

• P(not blue) = 1/14

• P(not blue) = 13/14

• P(not blue) = 14/15

• P(not blue) = 1/7

Tags

CCSS.7.SP.C.5

CCSS.7.SP.C.7

On lined paper draw a tree diagram to find the total number of outcomes of soccer uniforms for Dash.

Jersey: black, white, red Shorts: Nike, Adidas

Socks: solid, stripes

• 20 possible outcomes

• 7 possible outcomes

• 12 possible outcomes

• 10 possible outcomes.

Tags

CCSS.7.SP.C.8

Use the Fundamental Counting Principle to find the total number of possible outcomes for a villain uniform.

-cape, no cape

-goggles: black, blue, purple, or red

-suit: fire proof, water resistant

• 16 outcomes

• 8 outcomes

• 12 outcomes

• 13 outcomes

Violet performed an experiment by picking cards. The results are recorded in the table. Use the bar graph to find the experimental probability of Violet choosing a heart (not Hart).

• P(hearts) = 17/40

• P(hearts) = 17%

• P(hearts) = 17

• P(hearts) = 17/50

Tags

CCSS.7.SP.C.5

CCSS.7.SP.C.6

CCSS.7.SP.C.7

There are 84 villains. The probability of encountering a villain with a cape has lowered to 33 1/3 % (this is after the unfortunate incident with Syndrome). How many villains do not have capes?

• 56 villains

• 66 villains

• 28 villains

• 24 villains

Tags

TEKS.MATH.6.5B

The Incredible family and Frozone are playing games. There is a spinner with numbers 1-6 and a coin. What is the probability of spinning an even number and flipping tails?

• P(even, tails) = 1/2

• P(even, tails) = 1/4

• P(even, tails) = 2/3

• P(even, tails) = 3/4

Tags

CCSS.7.SP.C.5

CCSS.7.SP.C.7

CCSS.7.SP.C.8

Mr. Incredible was doing laundry. All of the super hero socks are the same size. In the pile there are 4 red and 8 blue socks. He randomly chooses 2 socks. What is the probability that both socks are red?

• P(red, red) = 1/9

• P(red, red) = 12/121

• P(red, red) = 1/11

• P(red, red) = 17/132

Tags

CCSS.7.SP.C.5

CCSS.7.SP.C.7

CCSS.7.SP.C.8