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
Answer:A.Very Crowded
I am 100% positive
Step-by-step explanation:
The first arrivals were the people who made up Washington society. ... Jackson found himself pressed into a situation with his back to a wall until his people were able to get him away from the crowd, and back to his hotel. The sheer number of people inside the White House led to collisions with furniture and food and yeah.
Hey there!
In order for you to solve for this equation, you need to multiply. That’s what the “•” is or means!
32 • 35 = ?
None of the above, because 32 times 35 equals 1,120
Answers 1,120 ✅
Good luck on your assignment and enjoy your day!
~LoveYourselfFirst:)
No is the answer. If she works 20 hours at Kroger ($8 x 20 hours = 160) and 15 hours babysitting($15 x 15 hours = 225) 160 + 225 = $385