Answer: The point estimate for the mean weight of all spawning Chinook salmon in the Columbia River is the mean weight from your sample 
= 31.2 pounds .
Step-by-step explanation:
The weights of spawning Chinook salmon in the Columbia river are normally distributed.
Given : The mean weight from your sample is 31.2 pounds with a standard deviation of 4.4 pounds.
The point estimate for the mean 
weight of all spawning Chinook salmon in the Columbia River is the mean weight from your sample i.e. is 31.2 pounds because the best point estimate for population mean is the sample mean. [in normal distribution]
Answer:
0 is the answer.
Step-by-step explanation:
3=(|x|/12) +3
3=(|x|+12(3))/12
3*12= |x|+ 36
|x|=36-36
|x|=0
x=0
Answer:
25% increase
Step-by-step explanation:
You multiply the original number (0.25) by 100.
% increase = Increase ÷ Original Number × 100. If the answer is a negative number, that means the percentage change is a decrease.
To solve this problem, all we have to do is to closely
analyze the situation. Now we are given that the amount of saving per week is
equivalent to one fifth (1 / 5) of Ben’s weekly pay (or weekly salary).
Now we are to find the weekly pay or weekly salary that
result in weekly savings of $61.50. So we can see that actually the value of
61.50 is one fifth (1 / 5) of W, therefore:
(1/ 5) W = 61.50
W = 5 * 61.50
W = $307.5
<span>Therefore a weekly pay of $307.5 will result in a weekly
savings of $61.50</span>
