Given that a directional hypothesis is a prediction made by a researcher regarding a positive or negative change, relationship, or difference between two variables of a population, a two-tailed test is the perfect tool to validate it because a two-tailed test is designed to examine both sides of a specified data range.
So the final answer to this question is:
True.
When it is has a probability value of 0.1587, it means
that 15.87% of the total sample is below z = -1 or there is a chance that the
selected sample has a 15.87% chance of being below z = -1. Actually all the
choices are telling the same thing in different way.
Answer:
E. All of the above
Answer:
I would say A or B hope it helps
Answer:
Explanation:

So first, we have to plug in zero and see if we can evaluate this limit simply from that.
When we plug in zero we get: (2e^0-2)/0
e^0 is 1 so we have 2-2/0 or 0/0. So we have an indeterminate form type 0/0.
This means we have to apply L'Hospital's Rule.
As a reminder L'Hospitals Rule is 
Meaning that we take the derivative of the top and bottom function as the approach some value "c". We can do this with a 0/0 indeterminate form.
So:
The derivative of 2e^x - 2 is just 2e^x
and the derivative of x is 1
So we are left with 
Plugging in zero we see this gives us 2 as 2(e^0) = 2(1) = 2.
Hence,
= 2