Probs & Stats - Unit 5 Exam

Find the sample space S:

• 6

• 5

• 8

• 4

Find the sample space

S: Days of the year

• 365

• 12

• 7

• 30

Find the theoretical probability of rolling an odd number on a die.

• 3/6 = 1/2 = 0.5 = 50%

• 2/6 = 1/3 = 0.33 = 33%

• 4/6 = 2/3 = 0.67 = 67%

• 1/6 = 0.17 = 17%

Tags

CCSS.7.SP.C.7B

Choose a heart card from a deck of cards.

• 13/52 = 1/4 = 0.25 = 25%

• 12/52 = 0.23 = 23%

• 10/52 = 0.19 = 19%

• 26/52 = 0.5 = 50%

Tags

CCSS.7.SP.C.7B

Choose a day that starts with an S in the days of the week.

• 2/7 ≈ 0.286 ≈ 28.6%

• 1/7 ≈ 0.143 ≈ 14.3%

• 3/7 ≈ 0.429 ≈ 42.9%

• 4/7 ≈ 0.571 ≈ 57.1%

Find the theoretical probability of rolling a sum of 6 when rolling 2 dice.

• 3/36 = 1/12 ≈ 0.08 = 8%

• 5/36 ≈ 0.14 = 14%

• 2/36 = 1/18 ≈ 0.055 = 5.5%

• 4/36 = 1/9 ≈ 0.11 = 11%

A jar contains 1 red and 1 blue marble. Four students are chosen to pick a marble each day. They win a prize if they get the red marble. What is the probability that at least 2 students win a prize?

• 11/16 = 0.6875 = 68.75%

• 1/8 = 0.125 = 12.5%

• 1/4 = 0.25 = 25%

• 3/8 = 0.375 = 37.5%

What is the probability of getting dots on the spinner?

• 2/5 or 0.4 or 40%

• 1/2 or 0.5 or 50%

• 1/4 or 0.25 or 25%

• 3/5 or 0.6 or 60%

Tags

CCSS.7.SP.C.7B

What is the probability of getting stripes on the spinner?

• 1/5 or 0.2 or 20%

• 1/4 or 0.25 or 25%

• 1/2 or 0.5 or 50%

• 1/3 or 0.33 or 33%

Tags

CCSS.7.SP.C.7B

What is the probability of getting black on the spinner?

• 1/3 or 0.33 or 33.3%

• 1/2 or 0.5 or 50%

• 1/4 or 0.25 or 25%

• 2/3 or 0.67 or 66.7%

Tags

CCSS.7.SP.C.7B