Answer:
-2
Step-by-step explanation:
slope = (y1-y2)/(x1-x2)
= (3-1)/(0-1)
= 2/-1
= -2
Answer:
11
Step-by-step explanation:
6 + 3 = 9
8 + 3 = 11
Answer:
Step-by-step explanation:
fe . seFgrgaerugaieurhrgHRGIQEHRIUGA EIUG IAUERG
Answer:
0.36427
Step-by-step explanation:
Mean = λ = 18 messages per hour
P(X = x) = (e^-λ)(λ⁻ˣ)/x!
P(X ≤ x) = Σ (e^-λ)(λ⁻ˣ)/x! (Summation From 0 to x)
But the probability required is that the messages thay come in an hour is between 15 and 20, that is, P(15 < X < 20)
P(15 < X < 20) = P(X < 20) - P(X ≤ 15)
These probabilities will be evaluated using a cumulative frequency calculator.
P(X < 20) = 0.65092
P(X ≤ 15) = poissoncdf(18, 15) = 0.28665
P(15 < X < 20) = P(X < 20) - P(X ≤ 15) = 0.65092 - 0.28665 = 0.36427.
You can use the Poisson distribution calculator here
https://stattrek.com/online-calculator/poisson.aspx
