Solution: We are given the population mean 
Now, in order to find which shift's mean is closest to population mean, we will find the mean of each shift.
The mean of shift 1 is:

The mean of shift 2 is:

The mean of shift 3 is:

The mean of shift 4 is:

We clearly see the mean of shift 2 is close to the population mean. Hence the option B) Shift 2 is correct.
Step-by-step explanation:
I think all of you under stand this question so please like the answer
Answer:
162°
Step-by-step explanation:
To find the measure of an interior angle in a regular n-gon, we use the formula:
(n - 2)(180) / n
We substitute 20 in for n to get:
(20 - 2)(180) / 20
And simplify:
(18)(180) / 20
(18)(9)
162°
Answer:
44 cm²
Step-by-step explanation:
Ar(big rect.) = (4+4)×(4+3)
= 8×7
= 56
Ar. of small rect. = 4×3 = 12
Area of X = 56-12
= 44 cm²