X= 8sqrt(2)
sorry i don’t know how to type the radical, but where the “sqrt” is the would be the symbol
I’ve included the work below
5 5 2 2 0
ten thousands thousands hundreds tens ones
Class A: 3 out of 30 = 3 / 30 = 0.1 = 10%
Class B: 28 out of 40 = 28 /40 = 0.7 = 70%
Class C: 11 out of 28 = 11 / 28 = 0.39 = 39%
Class D: 14 out of 50 = 14 / 50 = 0.28 = 28%
The answer is Class D
So, what you do for this problem is that you multiply $14,000 x 0.75
The answer would be $ 10500. You would need to pay $ 10,500.
Hope this helps!
Answer:
B. 97
Step-by-step explanation:
We have that to find our 
level, that is the subtraction of 1 by the confidence interval divided by 2. So:
Now, we have to find z in the Ztable as such z has a pvalue of 
.
So it is z with a pvalue of 
, so 
Now, find M as such
In which 
is the standard deviation of the population and n is the size of the sample.
How many students should be sampled to be within 1 drink of the population mean with 95% probability?
This is n when 
We know from preliminary studies that the standard deviation is around 5, so 
We round up, so the correct answer is:
B. 97
