Question

Stella has some colored cards that are the same size and shape. • The probability of randomly selecting a blue card is 20%. • The probability of randomly selecting a red card is 30%. What is the probability Stella will randomly select a card that is NOT blue, replace it, then randomly select a card that is red? Helpppp

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Answer 1

Answer: 0.24

Explanation:

The probability of randomly selecting a blue card = 20% = 0.2

The probability of randomly selecting a red card = 30% = 0.3

The probability of not randomly selecting a blue card = 1 - 0.2 = 0.8

The probability of not randomly selecting a red card = 1 - 0.3 = 0.7

Therefore, the probability that Stella will randomly select a card that is not blue, replace it, then randomly select a card that is red will be:

= P(not blue ) × P(red)

= 0.8 × 0.3

= 0.24

The answer is 0.24