Ineed the answer asap the standard deviation of a population is known to be 7.8. if the sample size is 85, what is the standard error of the mean? a.0.22 b.0.85 c.1.047 d.6.008

0.85

Step-by-step explanation:

We are given that The standard deviation of a population is known to be 7.8.

So,

Population size N = 85

Formula of standard error of the mean =

Substitute the values in the formula:

So, standard error of the mean =

                                                     =

Thus the standard error of the mean is 0.85

Hence Option B is correct.

may i see the picture? it would a lot, xox

the graph in the attached figure

step-by-step explanation:

we have

using a graphing tool

the graph in the attached figure

the roots are ( x-intercepts) x=-0.5,x=1,x=3

the y-intercept is the point (0,3)