Answer:
The probability that the town has 30 or fewer residents with the illness = 0.00052.
Step-by-step explanation:
So, we have the following set of data or information or parameters given from the question above and they are; the number of people living in that particular society/community/town = 74,000 residents and the proportion of people that the diseases affected = .000215.
The first step to do is to determine the expected number of people with disease. Thus, the expected number of people with disease = 74,000 × .000215 = 15.91.
Hence, the probability that the town has 30 or fewer residents with the illness = 1.23 × 10^-7 × 15.91^30/ 2.65253 × 10^-32 = 0.00052.
Note the formula used in the calculating the probability that the town has 30 or fewer residents with the illness = e^-λ × λ^x/ x!
Answer:
1. yes
2. 3
3. 1x
4. y=1x+3 or y=x+3
Step-by-step explanation:
Answer:
see below!!
Step-by-step explanation:
x + 3y = 5,
y = –x + 3
Substitute the point into each equation and verify that it is true
x + 3y = 5, 2 +3(1) = 5 5 = 5 true
y = -x +3 1 = -2+3 1=1 true
(2,1) is a solution
Answer:
The truck travel must to have a constant speed of ![22.06\ ft/sec](https://tex.z-dn.net/?f=22.06%5C%20ft%2Fsec)
Step-by-step explanation:
we have
![d=1.3t^{2}+t+2](https://tex.z-dn.net/?f=d%3D1.3t%5E%7B2%7D%2Bt%2B2)
where
d expresses a car's distance in feet
t is the number of seconds
<em>Find the distance d for t=8 sec</em>
![d=1.3(8)^{2}+8+2=93.2\ ft](https://tex.z-dn.net/?f=d%3D1.3%288%29%5E%7B2%7D%2B8%2B2%3D93.2%5C%20ft)
<em>Find the distance d for t=8.2 sec</em>
![d=1.3(8.2)^{2}+8.2+2=97.612\ ft](https://tex.z-dn.net/?f=d%3D1.3%288.2%29%5E%7B2%7D%2B8.2%2B2%3D97.612%5C%20ft)
The total distance in this interval of 0.2 sec is
![97.612-93.2=4.412\ ft](https://tex.z-dn.net/?f=97.612-93.2%3D4.412%5C%20ft)
<em>Find the speed of the car</em>
Divide the total distance by the time
![4.412/0.2=22.06\ ft/sec](https://tex.z-dn.net/?f=4.412%2F0.2%3D22.06%5C%20ft%2Fsec)
therefore
The truck travel must to have a constant speed of ![22.06\ ft/sec](https://tex.z-dn.net/?f=22.06%5C%20ft%2Fsec)
Step-by-step explanation:
Hi, Hope this will help:)