IM2 HW #21 Probability - Expected Value, Union, Intersection

Front

What is the probability of choosing a card that is a spade AND a 7 from a standard deck of 52 cards?

Back

1/52

Front

If a coin is flipped 3 times, what is the expected amount of money you will get if you receive $5 for 1 tail, $15 for 2 tails, and $40 for 3 tails?

Back

$12.50

Front

If Fredricka can make 65% of her shots from the free-throw line, how many shots can she expect to make if she shoots 75 times?

Back

49 shots

Front

What does the region shaded in green represent in a probability diagram?

Back

A or B

Front

What is an example of an outcome that is certain in probability?

Back

Landing on a number when rolling a die.

Front

Define 'expected value' in the context of probability.

Back

The expected value is the average outcome of a random event, calculated by multiplying each possible outcome by its probability and summing the results.

Front

What is the formula for calculating the probability of the union of two events A and B?

Back

P(A or B) = P(A) + P(B) - P(A and B)