A population has a standard deviation of 7.89. What is the approximate standard error of the mean for a sample size of 300? A. 17.32
B. 0.026
C. 2.20
D. 0.46

the answer is b 0.026

Step-by-step explanation

step-by-step explanation:

there is a formula i can give you:

it is r^2*n*sin(360/n) divided by 2 where r represents the "radius" and n is the number of sides.

plug them in:

(10sqrt(3))^2*6*sin(360/6) divided by 2

100*3*6*sin(60) divided by 2

900*sin(60)

900*sqrt(3)/2

450*sqrt(3)

approx is 779.4 cm^2

answer: 8

step-by-step explanation: