Let's simplify step-by-step.
<span>52−<span>8<span>(<span>n−1</span>)
</span></span></span>Distribute:
<span>=<span><span>52+<span><span>(<span>−8</span>)</span><span>(n)</span></span></span>+<span><span>(<span>−8</span>)</span><span>(<span>−1</span>)
</span></span></span></span><span>=<span><span><span>52+</span>−<span>8n</span></span>+8
</span></span>Combine Like Terms:
<span>=<span><span>52+<span>−<span>8n</span></span></span>+8
</span></span><span>=<span><span>(<span>−<span>8n</span></span>)</span>+<span>(<span>52+8</span>)
</span></span></span><span>=<span><span>−<span>8n</span></span>+60
</span></span>Answer:
<span>=<span><span>−<span>8n</span></span>+<span>60</span></span></span>
I assumed that 3 households are sampled.
Now, is the number in each of these households equal to 1, 3 and 8 people?
Next, the question says, samples of n=2 are randomly selected (with replacement) from these 3.
So are sample space is
11
13
31
33
18
81
38
88
83
88
This is done 9 times.
Is that how you understand the problem?
When they select the household with only 1 person, the variance is 0
When they select the household with 8 people, they variance will be from a discrete uniform distribution
Similarly for household with 3 individuals.
<h2><u><em>
$6.25</em></u></h2><h2><u><em>
</em></u></h2>
Step-by-step explanation:
because 1 kg is worth 2 is 1/4 is worth .25
so multiply 2 by 3 and add 1/4
good luck hope this helps.
Step-by-step explanation:
- 5x²-45=0
- 5x²=45
- x²=9
- x=√9
- x=3
hope it helps.
