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Unformatted text preview: 6)P ( X ≤ 1). We can use the cdf to compute this as F (6)F (1) = 0 . 6. 3 = 0 . 3 . (c) (3 pts) Use the pmf to compute the same probability, P (3 ≤ X ≤ 6). Be sure to show how you used the pmf to make the calculation. Answer: We can write P (3 ≤ X ≤ 6) = P ( X = 3) + P ( X = 4) + P ( X = 6), as these are the only possible values between 3 and 6 inclusive. We can use the pmf to compute this as P (3 ≤ X ≤ 6) = p X (3) + p X (4) + p X (6) = 0 . 1 + 0 . 05 + 0 . 15 = 0 . 3 . 3...
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This note was uploaded on 04/07/2010 for the course STAT 427 taught by Professor Staff during the Spring '08 term at Ohio State.
 Spring '08
 Staff
 Probability

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