Marginal Joint Conditional Probability

The definition of conditional probability P(A|B) is true only when

• P(A) > 0

• P(B) > 0

What p.d.f we have to use when we find the conditional probability of X, given Y?

• Mariginal p.d.f of X

• Mariginal p.d.f of Y

• Conditional p.d.f of X, given Y

• Conditional p.d.f of Y, given X

What is meant by the marginal p.d.f of the random variable X

What is the conditional relative frequency of people who play an instrument and do not play a team sport, given they play an instrument?

• 80%

• 27.2%

• 40%

• 90.1%

What is the marginal frequency for all Window's devices?

• 3652

• 9500

• 3309

• 292

• 51

What is the relative frequency for selecting a teen given that the person likes chocolate?

• .112

• .267

• .164

• .056

What is the joint frequency of people who purchased no food and no drink?

• 60

• 10

• 20

• 200

What is the conditional relative frequency of males who drive sports cars, given they are male?

• 35%

• 16.25%

• 65%

• 25%

What is the conditional relative frequency of women who drive SUV's, given they drive an SUV ?

• 56.25%

• 75%

• 83.25%

• 86.5%

What is the marginal frequency of males who were surveyed?

• 77

• 15

• 150

• 52