Probability Test

Teachers at Bell want to study how long students use their phones each day. Which is the best method of getting a random sample?

• Randomly select 150 Bell students from a list of all students.

• Randomly select 50 students from a list of those that have had their phones taken away at school.

• Ask 100 students from Mrs. Sheppard's classes.

• Randomly select 150 7th graders from a list of 7th graders at Bell.

Vanessa wants to know what sport 7th grade students at Bell like the best. Which is the best method of getting an unbiased sample?

• Randomly select 50 students playing soccer at lunch.

• Ask Mr. Holmes what the best sport is.

• Randomly select 100 7th graders out of a list of all 7th graders.

• Randomly select 200 students out of a list of all students at Bell.

Determine the likelihood of the event: picking a green shirt from a drawer with 7 blue shirts and 4 green shirts.

• Certain

• Impossible

• As likely as not

• Likely

• Unlikely

Determine the likelihood of the event: drawing a red card from a standard deck of playing cards (52 cards with 26 red cards and 26 black cards)

• Certain

• Impossible

• As likely as not

• Likely

• Unlikely

Determine the likelihood of the event: drawing a yellow marble out of a jar filled with 12 blue marbles, 13 pink marbles, 2 green marbles, and 23 white marbles.

• Certain

• Impossible

• As likely as not

• Likely

• Unlikely

A car dealership record 200 vehicle sales during their Memorial Day Event. What is the experimental probability that the next sale during that event is a silver car?

• $\frac{23}{200}$

• $\frac{1}{2}$

• $\frac{23}{100}$

• $\frac{13}{100}$

A car dealership record 200 vehicle sales during their Memorial Day Event. What is the experimental probability that the next sale during that event is NOT a red truck?

• $\frac{21}{100}$

• $\frac{79}{100}$

• $\frac{9}{50}$

• $\frac{41}{100}$

A spinner has 10 equal sections marked 1 through 10. What is the probability you spin and land on a number greater than 6

• $\frac{3}{5}$

• $\frac{1}{2}$

• $\frac{1}{4}$

• $\frac{2}{5}$

There are four kings, four queens, and four jacks in a standard deck of 52 cards. These are known as the face cards. What is the probability drawing a face card at random?

•  $\frac{3}{13}$  

•  $\frac{1}{26}$  

•  $\frac{3}{26}$  

•  $\frac{1}{13}$  

You have a spinner numbered 1-5 with 5 equal sections and a standard die. What is the compound probability that you spin the spinner and it land on a number greater than 2 and roll a 6 on the die?

• $\frac{3}{5}$

• $\frac{1}{6}$

• $\frac{1}{10}$

• $\frac{3}{10}$