Answer to Question #134579 in Psychology for Ash

Question #134579

Wanda and her sister, Siyabulela entered a lucky draw and can win R250 000 worth of prizes from a gaming magazine. Wanda sent through 15 entry forms, while Siyabulela sent through 35.

The report from the competition administrators is that 400 entries qualified, and both Wanda and Siyabulela qualified. Use this information to answer the following questions:

1.1 If Wanda wins first prize, what is the probability that Siyabulela will win second prize? (The first prize-winning entry is not put back in the container.).

1.2 What is the probability that Wanda and Siyabulela will win first and second prize?

Expert's answer

1.1 probability for Siyabulela to win second prize 35/399


2.2 Probability for wanda and Siyabulela to win first and second price

15/400 * 35/399

=0.0375 * 0.0877192982


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