WorksheetsCh 13 General Addition and Multiplication Rules
Total questions: 19
Worksheet time: 38mins
What is the probability of selecting an orange candy?
110%
50%
99%
100%
P(Rolling a 9 on a number cube)=
0
-1
1
-.25
A bag contains 30 pieces of candy. There are 15 grape, 7 cherry, 3 lemon, 5 strawberry. What is P(lemon)?
3
1/10
3/10
30%
The cafeteria has determined that 12% of the customers purchase a salad, 36% of the customers purchase a dessert and 14% of the customers purchase water. Are these events mutually exclusive?
No
Not able to determine
Yes
Go ask Bob
The cafeteria has determined that 36% of the customers purchase a dessert. What is the complement of purchasing a dessert?
Purchasing a beverage.
Purchasing a dessert.
Purchasing a salad.
Not purchasing a dessert.
The cafeteria has determined that 36% of the students purchase a dessert. What is the probability that 3 randomly chosen students purchase a dessert?
0.467%
1.08
Go ask Bob
0.0467
The cafeteria allows students to purchase one entree at a time. Last Monday, 45% of the students purchased pizza, 32% purchased a burger, 21% purchased chicken strips and the rest purchased salad bar. What is the probability that students purchased the salad bar?
0.02%
0.02
12%
Can't be determined.
The cafeteria allows students to purchase one entree at a time. Last Monday, 45% of the students purchased pizza, 32% purchased a burger, 21% purchased chicken strips and the rest purchased salad bar. Are the entrees purchased mutually exclusive events?
No
Doesn't matter
Go ask Bob.
Yes
The plastic arrow on a spinner for a child's game stops with the pointer at one of four colors, that determines what happens next. Which probabilities are legitimate?
Red: 0.20, Yellow: 0.25, Green: 0.25, Blue: 0.25
Red:0.10, Yellow: 0.20, Green: 0.30, Blue: 0.40
Red: 0.20, Yellow: 030, Green: 0.40, Blue: 0.50
Red: 0.0, Yellow: 0.0, Green: 1.0, Blue: 0.0
Of a group of Seniors at Alamo Heights HS, 18% were taking no Math class, 66% were taking only one Math class, and 16% were taking two Math classes. If 2 random seniors are chosen, what is the probability of choosing two seniors that are both taking no Math classes?
0.36
0.0648
0.0324
0.18
Of a group of Seniors at Alamo Heights HS, 18% were taking no Math class, 66% were taking only one Math class, and 16% were taking two Math classes. If a random senior is chosen, what is the probability of choosing a senior that is taking one or more Math classes?
0.72
0.82
0.1056
0.50
Of a group of Seniors at Alamo Heights HS, 18% were taking no Math class, 66% were taking only one Math class, and 16% were taking two Math classes. If 4 random seniors are chosen, what is the probability that none of them are taking 2 Math classes?
0.840
0.498
0.0007
0.16
Of a group of Seniors at Alamo Heights HS, 18% were taking no Math class, 66% were taking only one Math class, and 16% were taking two Math classes. If 4 random seniors are chosen, what is the probability that at least one is taking 2 Math classes?
0.294
0.9994
0.502
0.160
The cafeteria has determined that 42% of the customers purchase a slice of pizza and 65% of the customers prefer plain m&m's. Are these two events independent?
Yes
No
I don't know
Go ask Bob
If you are picking a card randomly from a deck of cards, the events of picking a jack and picking a heart are mutually exclusive.
True
False
If you are picking a card randomly from a deck of cards, the events of picking a spade and picking a diamond are mutually exclusive.
True
False
If 45% of the Statistics students have backpacks that they bring to class and 38% have a pencil bag for their supplies. What is the probability that a student has a backpack and a pencil bag for supplies?
.45 x .38 = 0.171
.45 - .38 = .07
.45 + .38 = .83
Not possible to calculate because the events are not mutually exclusive.
