3.6 / 0.2 = 18 liter glasses :))
Answer:
Step-by-step explanation:
Dan paid 69 divided by 9 = H - 15
Answer:
See the proof below.
Step-by-step explanation:
For this case we just need to apply properties of expected value. We know that the estimator is given by:

And we want to proof that 
So we can begin with this:

And we can distribute the expected value into the temrs like this:

And we know that the expected value for the estimator of the variance s is
, or in other way
so if we apply this property here we have:

And we know that
so using this we can take common factor like this:

And then we see that the pooled variance is an unbiased estimator for the population variance when we have two population with the same variance.
Answer:
(4,3)
Step-by-step explanation:
The solution of two lines is where they intersect
Step-by-step explanation:
we can simply prove it with sss axiom here's the sum hope you'll appreciate