Basic Probabilities

A bag contains 7 red candies, 3 yellow, and 6 blue. Omar will choose a candy without looking. What's the probability that he will choose red ?

• 7/16

• 1/2

• 3/16

• 3/8

Teddy flips a coin 200 times. The results are shown below:

Heads: 105 times

Tails: 95 times

Based on these results, what is the experimental probability of the coin landing on heads ?

• 21/40

• 19/40

• 1/2

• 3/5

Yul has 10 blue, 5 red, and 3 yellow Starburst in a bag. He will reach into the bag and pull one out. What is the probability that he pulls out a blue Starburst ?

• 5/9

• 1/2

• 5/18

• 1/6

Ryan K. went to lunch and looked at the menu. A meal has 1 entree, 1 fruit, and 1 drink. How many meal choices are available to Ryan K.? Use the menu below:

Entree: (Hamburger, Turkey, Ham, Salami)

Fruit: (Apple, Banana)

Drink: (Bottled water, Powerade)

• 16

• 12

• 9

• 32

The table represents the probability of guessing correct on a 5 question true-false quiz.  Find the probability for at least 4 questions correct.

• .03125

• .15625

• .3125

• .1875

Is this a probability distribution?

• No

• Yes

• 0
• 0.1
• 0.5
• 0.05

Is this a probability distribution?

• No

• Yes

Find the missing value for P(X=5) in the probability ditribution:

Number of Toys | Probability

0| 0.03

1| 0.16

2| 0.30

3| 0.23

4| 0.17

5| ?

• 0.11

• 0.21

• 0.01

• 0.31

What does P(Y<3) mean?

• The probability that the random variable Y is greater than 3.

• The probability that the random variable Y is less than 3.

• The probability that the random variable X is greater than 3.

• The probability that the random variable X is less than 3.