Probability Statements (with Conditionals)

Convert to a formal probability statement:

What proportion of Titanic passengers were in first class?

• P(first)

• P(titanic)

• P(titanic|first)

• P(passenger|titanic)

Convert to a formal probability statement:

What percentage of those who died on the Titanic were crew?

• P(crew|died)

• P(died|crew)

• P(died)

• P(crew)

Convert to a formal probability statement:

What is the probability that someone who died was in first class?

• P(first|died)

• P(died|first)

• P(first)

• P(died)

Convert to a formal probability statement:

What is the probability that someone who was in first class died?

• P(died|first)

• P(first|died)

• P(first)

• P(died)

Convert to a formal probability statement:

What is the probability that someone on the Titanic died?

• P(died)

• P(alive)

• P(Titanic)

• P(died|alive)

Based on the table, what is the probability that someone will not like snowmobiles or skateboards?

• 125/160 = 0.78

• 10/160 = 0.06

• 80/160 = 0.50

• 105/160 = 0.66

Based on the table, what is the probability that someone will like snowmobiles ?

• 125/160 = 0.78

• 10/160 = 0.06

• 80/160 = 0.50

• 105/160 = 0.66

Based on the table, what is the probability that someone will like both snowmobiles and skateboards?

• 125/160 = 0.78

• 10/160 = 0.06

• 80/160 = 0.50

• 105/160 = 0.66

Based on the table, what is the probability that someone will like skateboards ?

• 125/160 = 0.78

• 10/160 = 0.06

• 80/160 = 0.50

• 105/160 = 0.66

Reorder the following from least likely to most likely:

• P(baseball)

• P(female|baseball)

• P(basketball)

• P(baseball|female)

• P(football)