Simple and Compound Events
A cup contains 3 blue paper clips, 2 red paper clips, and 5 silver paper clips. What is the probability of not drawing a red paper clip? (Write your answer as a percent)
80%
Alex rolled a six -sided die and recorded the results of each roll as shown below.
-1: rolled 5 times
-2: rolled 6 times
-3: rolled 7 times
-4: rolled 8 times
-5: rolled 9 times
-6: rolled 5 times
Based on these results, what is the experimental probability of rolling a 6?
1/8
The list below shows different types of tennis rackets and the number of each that were sold at a store during a weekend.
-Pro-Racket: 35
-Extra Lite Pro-Racket:14
-Titanium Plus Racket: 18
-Pure Drive Racket: 5
Based on these results, what is a reasonable prediction for the number of Titanium Plus Rackets that will be sold out of the next 216 rackets sold?
54
A refrigerator has a variety of drinks. The contents are shown below. If one drink is picked randomly, then which of the following is not true?
Water- 14 Cola- 28 Lemonade- 7
A. Your are twice as likely to select a cola than a water.
B. You are half as likely to select a lemonade than water.
C. You are more likely to select a cola than a water or a lemonade.
D. You are twice as likely to select a water than a cola.
D
A spinner is divided into congruent sections that are labeled from 1 through 7. If the spinner is spun one time, what is the probability of the arrow not landing on a section labeled with an odd number?
3/7
On Robert's shelf are:
6 mystery books
5 science books
4 history books
3 adventure books
Robert will randomly choose 1 book to read. What is the probability that he will choose an adventure book?
1/6
On a youth soccer team 3 out of 12 team members have played in previous years. Based on this information, if 180 kids are in the youth soccer league, then how many could be expected to have played the year before?
45
A container of marbles holds 3 clear, 10 yellow, 3 green, and 4 red marbles. A marble is selected at random from the container. Which statement about selecting one marble from the container is NOT accurate?
A. Selecting a green or a red marble combined is less likely than selecting a yellow marble.
B. Selecting a green marble is equally as likely as selecting a clear marble.
C. Selecting a red marble is more likely than either selecting a clear marble or selecting a green marble.
D. Selecting a clear marble is equally likely as selecting a red marble.
D
In the movie drawer there are seven action movies, five comedies, and three dramas. What is the probability of choosing and action or a comedy? ( Write the answer in its simplest form)
4/5
Tara has two bags of marbles. The first bag contains 6 red marbles, 5 blue marbles, and 4 green marbles. The second bag contains 3 red marbles, 2 blue marbles, and 4 green marbles. Tara will randomly select 1 marble from each bag. What is the probability that Tara will select a blue marble from each bag?
2/27
At an assembly 7 out of the first 10 students who entered the gym were carrying a backpack. Based on this information, if 700 students were at the assembly, how many students could be expected to be carrying a backpack?
490
Debbie surveyed customers in a restaurant to find out their favorite meal. The results of the survey are shown below.
Meal Number of People
Hamburger and fries 17
Spaghetti 8
Chili 12
Vegetarian delight 3
One person in the restaurant will be picked at random. Based on the given information, which statement is true?
A. This person's favorite meal is twice as likely to be hamburger and french fries as it is to be spaghetti.
B. This person's favorite meal is four times as likely to be chili as it is to be vegetarian delight.
C. This person's favorite meal is more likely to be chili than hamburger and french fries.
D. This person's favorite meal is equally likely to be either vegetarian delight or spaghetti.
B
There are 5 number cards labeled 1 through 5. What is the probability and its complement of randomly drawing a card from this set that is more than 4?
P(card >4) =1/5
complement is P(card less than or equal to 4)=4/5
Mildred has a bag of coins. The bag contains 10 dimes, 5 nickels, and 1 penny. She will randomly select 2 coins from the bag one at a time without replacement. What is the probability that Mildred will select a dime first an then a penny?
1/24
A neighborhood watch association surveyed 40 neighbors about their feelings of safety in the neighborhood. They will survey an additional 80 neighbors. Based on the information, predict how many of the 80 neighbors will feel safe?
Response Number of Neighbors
Unsafe 12
Neutral 10
Safe 18
36
In a survey 7 out of 8 dentists recommend a ProTooth toothbrush. Based on this information, which can the toothbrush company predict about its recommendations?
A. In a survey of 24 dentists, 18 of them will recommend a ProTooth toothbrush
B. In a survey of 40 dentists, 33 of them will recommend a ProTooth toothbrush
C. In a survey of 64 dentists, 56 of them will recommend a ProTooth toothbrush
D. In a survey of 88 dentists, 70 of them will recommend a ProTooth toothbrush
C