Answer:
Step-by-step explanation:
I uploaded a picture hope it helps
Answer:

And we have a sample size of n =81. We want to estimate the standard error of the sampling distribution
and for this case we know that the distribution is given by:

And the standard error would be:

And replacing we got:

Step-by-step explanation:
For this case we know the population deviation given by:

And we have a sample size of n =81. We want to estimate the standard error of the sampling distribution
and for this case we know that the distribution is given by:

And the standard error would be:

And replacing we got:

Answer:
Step-by-step explanation:
10+100=1000
20+100=2000
-4 is greater than - 10 because -4 is closer to 0 than -10 is