Answer:
(a) 
The expected number in the sample that treats hazardous waste on-site is 0.383.
(b) 
There is a 0.000169 probability that 4 of the 10 selected facilities treat hazardous waste on-site.
Step-by-step explanation:
Professional Geographer (Feb. 2000) reported the hazardous waste generation and disposal characteristics of 209 facilities.
N = 209
Only eight of these facilities treated hazardous waste on-site.
r = 8
a. In a random sample of 10 of the 209 facilities, what is the expected number in the sample that treats hazardous waste on-site?
n = 10
The expected number in the sample that treats hazardous waste on-site is given by




Therefore, the expected number in the sample that treats hazardous waste on-site is 0.383.
b. Find the probability that 4 of the 10 selected facilities treat hazardous waste on-site
The probability is given by
For the given case, we have
N = 209
n = 10
r = 8
x = 4




Therefore, there is a 0.000169 probability that 4 of the 10 selected facilities treat hazardous waste on-site.
A 0.66... that the repeating decimals
Answer:
variable is (<em> </em><em>x</em><em> </em><em>)</em>
<em>∆</em><em>product</em><em> </em><em>of</em><em> </em><em>8</em><em> </em><em>:</em>
<em>8</em><em> </em><em>x</em>
<em>∆</em><em>the</em><em> </em><em>number</em><em> </em><em>increase</em><em>d</em><em> </em><em>by</em><em> </em><em>2</em><em> </em><em>:</em><em> </em>
<em>8</em><em> </em><em>x</em><em> </em><em>+</em><em> </em><em>2</em>
<em>And</em><em> </em><em>we</em><em>'re</em><em> </em><em>done</em><em> </em><em>♥️</em>
Why is it so complicated? Volume of one cube is 1/2 * 1/2 * 1/2 = 1/8 cm^3
Volume of prism is 1/8 * 96 = 12 cm^3