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slamgirl [31]
3 years ago
11

Let X, the number of flaws on the surface of a randomly selected boiler of a certain type, have a Poisson distribution with para

meter μ = 5. Use the cumulative Poisson probabilities from the Appendix Tables to compute the following probabilities. (Round your answers to three decimal places.)(a) P(X ≤ 8)(b) P(X = 8)(c) P(9 ≤ X)(d) P(5 ≤ X ≤ 8)(e) P(5 < X < 8)
Mathematics
1 answer:
kvasek [131]3 years ago
5 0

Answer:

(a) 0.932

(b) 0.0653

(c) 0.032

(d) 0.316

(e) 0.251

Step-by-step explanation:

From the table with mean parameter μ = 5, we can compute the following cumulative and density probability

(a) P(X \leq 8) = 0.932 (cumulative)

(b) P(X = 8) = 0.0653 (density)

(c) P(9 \leq X) = 1 - P(X \leq 9) = 1 - 0.968 = 0.032 (cumulative)

(d) P(5 \leq X \leq 8) = P(X \leq 8) - P(X \leq 5) = 0.932 - 0.616 = 0.316 (cumulative)

(e) P(5 < X < 8) = P(X \leq 8) - P(X \leq 5) - P(X = 8) = 0.932 - 0.616 - 0.0653 = 0.251

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