Arandom sample of n = 4 scores is selected from a population with mean (mu) = 80 and population standard deviation (sigma) = 20. on average, how much difference would you expect between the sample mean and the population mean? (i. e., what is the standard error of a sampling distribution composed of means taken from samples of size 4? )

10

Step-by-step explanation:

The formula used for standard error is :-

, where is population standard deviation and n is the sample size.

Given: n = 4

Then, the  difference would expected between the sample mean and the population mean will be :

Hence, the expected difference between the sample mean and the population mean = 10

7! = 7×6×5×4×3×2

3! = 3× 2

as 7! is multiple of 3! because 7! contains 3! that is 3× 2 as factor

so 7! /(3! ) = 7× 6× 5× 4

= 42 × 20

= 840

its b) 840✌✌✌

dhruv⭐

10/60

step-by-step explanation:

if you divide 10 by 60 the answer is 0.166666 while if you divide or solve the other problems it equals 0.6