Probability

A multiple-choice question on a Statistics quiz has possible answers of a, b, c, d, or e. What is the probability that "false" is the correct answer?

• 1
• 0.5
• 0
• 0.2

A weather report indicated that there is a 3 in 10 chance of rain today.  What is the probability of no rain today?

• 0.3
• 0.7
• 0.5
• .07

If a day of the week is randomly selected, what is the probability that it is a day containing the letter y?

• 1
• 0.5
• 0.7
• 0.1

Based on a Harris poll, 20% of adults smoke.  If two adults are randomly selected, what is the probability that they both smoke?

• .40
• .50
• .02
• .04

If you flip a coin three times, what is the probability that it will land on heads three times?

• 1/2
• 1/8
• 1/4
• 0 - tail or fail

Based on a study by Indiana University, 35% of the population has blue eyes. 
If someone is randomly selected, what is the probability that the person does not have blue eyes?

• 0.65
• 0.35
• 0.5
• 0.33

If 35% of the population has blue eyes, and four people are randomly selected, what is the probability that they all have blue eyes?

• 0.35
• 0.15
• 0.015
• 0.035

Find P(Challenge Rejected)

• 0.850
• 0.150
• 0.360
• 0.610

Find P(Male Player or Challenge Rejected)

• 0.850
• 0.610
• 0.360
• 0.150

Find P(Female Player and Challenge Accepted)

• 0.360
• 0.150
• 0.610
• 0.850