Answer:
<h3>The requirement that must be satisfied for a sample to be random is <u>" Each individual has an equal chance of being selected "</u></h3>
Step-by-step explanation:
<h3>The requirement that must be satisfied for a sample to be random is <u>" Each individual has an equal chance of being selected "</u></h3><h3>Therefore option a) " Each individual has an equal chance of being selected " is correct</h3>
- Simple random sampling is a method used to cull a smaller sample size from a larger population
- The uses of a simple random sample is easy to use and it is used in the accurate representation of the larger population
93 + (68 + 7)
(93 + 68) + 7
= 168
hope this helps
Answer: 17.28
Step-by-step explanation:
Simplify
0.9((2.25)(4)+(1.4)(3)+6)
=(0.9)((2.25)(4)+(1.4)(3)+6)
=(0.9)((2.25)(4))+(0.9)((1.4)(3))+(0.9)(6)
=8.1+3.78+5.4
=17.28
Here's how you solve this. So, x+y=2, right? Let's isolate x. x+y-y=2-y. x=2-y. NOW, if x=2-y, in 3x+2y=5, we can REPLACE x with 2-y and use it to solve for y! 3x+2y=5. 3(2-y)+2y=5. (3*2)+(3*-y)+2y=5. 6+(-3y)+2y=5. 6+(-y)=5. 6+(-y)-6=5-6. -y=-1. -y/-1=-1/-1. y=1.
So, if y=1, we can substitute that back into either equation--but let's go with the easier one, x+y=2. x+1=2. x+1-1=2-1. x=1. 1+1=2, so that works; let's check the other equation. 3(1)+2(1)=5. 3+2=5. 5=5. That's correct!
Answer: x=1, y=1
