This Question: 1 pt 15 of 46 (0 complete)v This Test: 46 pts possible A sales firm receives an average of four calls per hour on its toll-free number For any given hour, Snd the probability that it w...

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This Question: 1 pt 15 of 46 (0 complete)v This Test: 46 pts possible A sales firm receives an average of four calls per hour

Answer 1

Answer #1

Here, lambda= 4

Poisson's Distribution Formula:
P(X = x) = (e^-λ) (λ^x) / x!

P(x= 9) = e^-4 * 4^9/9!

P(x = 9) = 0.0132

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Answer 2

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