Answer:
I believe the answer ur looking for is 3 (D)
Step-by-step explanation:
Yes they can all have the same
Answer:

And replacing we got:

And then the estimator for the standard error is given by:

Step-by-step explanation:
For this case we have the following dataset given:
20.05, 20.56, 20.72, and 20.43
We can assume that the distribution for the sample mean is given by:

And the standard error for this case would be:

And we can estimate the deviation with the sample deviation:

And replacing we got:

And then the estimator for the standard error is given by:

Step-by-step explanation:
If there is a growth of 5.6% per time unit. The function is
f(t) = 1600 * (1.056)^t