Х 4 5 6 6 7 8 9 P(x) 0.06 0.2 0.4 0.1 0.14 0.1 The probabilities that a player will get 4 - 9 questions right on a trivi

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Х 4 5 6 6 7 8 9 P(x) 0.06 0.2 0.4 0.1 0.14 0.1 The probabilities that a player will get 4 - 9 questions right on a trivi

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Х 4 5 6 6 7 8 9 P(x) 0.06 0.2 0.4 0.1 0.14 0.1 The probabilities that a player will get 4 - 9 questions right on a trivia quiz are shown below. a) Find the mean b) Find the variance c) Find the standard deviation. Express all answers correct to 2 decimal places.
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