Consider a population with a mean of 20 and a standard deviation of 3. You take a sample of size 36. What is the expected value of the sample mean? Group of answer choices 20 16 ½

20

Step-by-step explanation:

Sample Mean can be defined as the mean of a given set of samples in a data.

Sample Mean can be denoted by the symbol x bar.

From the question, we are given population mean as 20.

Hence, in this case, the expected value of the sample mean = population mean

Therefore, the expected value of the sample mean = 20

(n^3 - n)

= n(n-1)(n+1)

since it is divisible by 3 and 2 ,because it is a multiple 3 consecutive number

if, n-1 is odd then n+1 is also odd, then it is a multiple of 9

but if, n-1 is even then n+1 is also even, then it is a multiple of 4

so, largest multiple = max(9*2, 4*3) = max(18, 12) = 18

step-by-step explanation:

ask goog great chance of finding the solution there