The first box on page 329 gives the formula for conditional probability for independent events.For example, if you were to draw a card, put it back in the deck and then draw another card, those 2 events would be independent because the first drawing has no bearing on the second draw.

1.PRACTICE:You spin the arrow on a spinner that has 5 separate sections, each with its own color (red, orange, yellow, green, blue).What is the probability that you land on a red given that you first land on a blue?

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