Answer:
20
Step-by-step explanation:
17+24+26+13=80 divided by how many numbers there are 80 divided by 4 = 20.
Answer:
Step-by-step explanation:
B
Answer: A. We are 99% confident that the interval from 4.1 to 5.6 actually does contain the true value of mu.
Step-by-step explanation:
The correct interpretation of a 99% confidence interval is that we are 99% confident that the true population mean falls in it.
Given 99% confidence interval : 
Then, the correct interpretation : We are 99% confident that the interval from 4.1 to 5.6 actually does contain the true value of mu.
Answer:

Step-by-step explanation:
So we have:

First, distribute:

Combine like terms:

Add:

So, in the a+bi format, we will have:

Answer:
Step-by-step explanation:
we have f=-6.5
-2.75- (-6.5)= -2.75+6.5=3.75