Probability Day 9

Last updated about 2 years ago

15 questions

Instructions

1

Answer the problems on your paper and input your answers into the formative.

In Mrs. Miller's art class, 60% of the students are in 7th grade and 40% of the students are in 8th grade. Of the 30 students in her class, 20 of them play a sport. When Mrs. Miller chooses a student at random, what is the probability that she will choose an 8th grader that does NOT play a sport?

4/15

2/15

2/5

3/5

A school fundraiser is selling “grab bag” tickets where someone can pull a bill from a bag. In the bag, there are 80 $1.00 bills, 10 $5.00 bills, 5 $10.00 bills, 4 $20.00 bills and one $100.00 bill. What is the probability that someone will pull out a $20.00 bill followed by someone that pulls out a $100.00 bill?

1/2,500

4/9,801

1/2475

2/4,851

Based on the information from Ms. Miller’s class, if there are 700 students in the school, how many could be expected to be 7th graders who play a sport?

140

280

On a bookcase in the library, there are 40 science fiction books, 22 mystery books, and 18 historical fiction books. If a student chooses two books randomly off the shelf, what is the probability that the student chooses two mystery books?

121/1600

231/3160

121/400

153/231

A gumball machine is filled with 7 red, 12 blue, 10 white, 15 yellow, and 6 purple. What is the probability of someone getting a white followed by a red?

18/245

9/125

7/250

1/35

At Mel’s Diner, the lunch combo consists of a choice of soup and a choice of sandwich. On Tuesday, 30% of their customers chose tomato basil soup and a turkey and Swiss sandwich. Based on this information, if they have 190 customers for lunch on Wednesday, how many would be expected to have tomato basil soup with a turkey and Swiss sandwich?

57

133

613

73

On Robby’s soccer team, 25% of his teammates have green eyes and 70% of his teammates have brown hair. If a teammate is chosen at random, what is the probability that the teammate will not have green eyes or brown hair?

3/40

21/40

9/40

7/40

Scott has 10 movies in his streaming cue. Seven of the movies are comedies and the rest are action. If he randomly chooses a movie to watch for the next three nights, what is the probability that Scott will watch 3 comedies?

7/24

343/1,000

343/720

21/100

Reyna is playing a game with two number cubes. She rolls doubles every 1 out of 8 rolls. If she rolls the number cubes 40 times, how many times would Reyna be expected to roll doubles?

10

5

1

3

Tatum is choosing snacks to put in her lunch for the next three days. She can choose from 3 bags of chips, 2 granola bars, and 4 bananas. What is the probability that she puts chips in her lunch for the next three days?

27/729

1/84

27/504

6/729

The spinner below is spun 75 times and the results are shown in the table. Based on the table, what is a reasonable prediction of the number of times the spinner will land on blue if the spinner is spun 225 times?

60

54

45

66

The area of the square is 49 square inches

True

False

The area of the shaded region is approximately 29.5 square inches.

True

False

The area of the circle is approximately 78.5 square inches.

True

False

The radius of the circle is 10 inches.

True

False

In Mrs. Miller's art class, 60% of the students are in 7th grade and 40% of the students are in 8th grade. Of the 30 students in her class, 20 of them play a sport. When Mrs. Miller chooses a student at random, what is the probability that she will choose an 8th grader that does NOT play a sport?

4/15

2/15

2/5

3/5

A school fundraiser is selling “grab bag” tickets where someone can pull a bill from a bag. In the bag, there are 80 $1.00 bills, 10 $5.00 bills, 5 $10.00 bills, 4 $20.00 bills and one $100.00 bill. What is the probability that someone will pull out a $20.00 bill followed by someone that pulls out a $100.00 bill?

1/2,500

4/9,801

1/2475

2/4,851

Based on the information from Ms. Miller’s class, if there are 700 students in the school, how many could be expected to be 7th graders who play a sport?

140

280

On a bookcase in the library, there are 40 science fiction books, 22 mystery books, and 18 historical fiction books. If a student chooses two books randomly off the shelf, what is the probability that the student chooses two mystery books?

121/1600

231/3160

121/400

153/231

A gumball machine is filled with 7 red, 12 blue, 10 white, 15 yellow, and 6 purple. What is the probability of someone getting a white followed by a red?

18/245

9/125

7/250

1/35

At Mel’s Diner, the lunch combo consists of a choice of soup and a choice of sandwich. On Tuesday, 30% of their customers chose tomato basil soup and a turkey and Swiss sandwich. Based on this information, if they have 190 customers for lunch on Wednesday, how many would be expected to have tomato basil soup with a turkey and Swiss sandwich?

57

133

613

73

On Robby’s soccer team, 25% of his teammates have green eyes and 70% of his teammates have brown hair. If a teammate is chosen at random, what is the probability that the teammate will not have green eyes or brown hair?

3/40

21/40

9/40

7/40

Scott has 10 movies in his streaming cue. Seven of the movies are comedies and the rest are action. If he randomly chooses a movie to watch for the next three nights, what is the probability that Scott will watch 3 comedies?

7/24

343/1,000

343/720

21/100

Reyna is playing a game with two number cubes. She rolls doubles every 1 out of 8 rolls. If she rolls the number cubes 40 times, how many times would Reyna be expected to roll doubles?

10

5

1

3

Tatum is choosing snacks to put in her lunch for the next three days. She can choose from 3 bags of chips, 2 granola bars, and 4 bananas. What is the probability that she puts chips in her lunch for the next three days?

27/729

1/84

27/504

6/729

The spinner below is spun 75 times and the results are shown in the table. Based on the table, what is a reasonable prediction of the number of times the spinner will land on blue if the spinner is spun 225 times?

60

54

45

66

The area of the square is 49 square inches

True

False

The area of the shaded region is approximately 29.5 square inches.

True

False

The area of the circle is approximately 78.5 square inches.

True

False

The radius of the circle is 10 inches.

True

False