Grade 7 | Unit 8 | Lesson 6: Estimating Probabilities Using Simulation | Practice Problems

The weather forecast says there is a 75% chance it will rain later today. Draw a spinner you could use to simulate this probability. Describe another way you could simulate this probability.

• Put 4 marbles in a bag, three blue and one white. The blue marbles represent “rain.”

• Use a dice where 1-5 represent rain and 6 represents no rain.

• Flip a coin twice and consider heads as rain and tails as no rain.

Tags

CCSS.7.SP.C.8C

An experiment will produce one of ten different outcomes with equal probability for each. Why would using a standard number cube to simulate the experiment be a bad choice?

• A standard number cube only has 6 outcomes, so it cannot produce all 10 possibilities from the experiment.

• A number cube would give biased results.

• A number cube is not suitable for simulating experiments.

• A number cube has numbers on it which might not correspond to the experimental outcomes.

Tags

CCSS.7.SP.C.8C

An ice cream shop offers 40 different flavors. To simulate the most commonly chosen flavor, you could write the name of each flavor on a piece of paper and put it in a bag. Draw from the bag 100 times, and see which flavor is chosen the most. This simulation is not a good way to figure out the most-commonly chosen flavor. Explain why.

• Drawing from the bag is random, but people do not usually randomly choose ice cream flavors.

• The sample size is too small to get accurate results.

• The method does not consider people's flavor preferences.

• This method could lead to repetition, not capturing an accurate representation.

Tags

CCSS.7.SP.C.8C

Each set of three numbers represents the lengths, in units, of the sides of a triangle. Which set can not be used to make a triangle?

• 7, 6, 14

• 4, 4, 4

• 6, 6, 2

• 7, 8, 13

Tags

CCSS.7.G.A.2

Tags

CCSS.8.EE.B.5