Answer:
The margin of error for a 90% confidence interval is 16.4
Step-by-step explanation:
We are given the following in the question:
Sample size, n = 25
Standard deviation = 50

Margin of error =

Putting the values, we get,

Thus, the margin of error for a 90% confidence interval is 16.4
Elena should put a point where the two circles intersect and draw line segments connecting that point to points A and B to finish her triangle.
Answer:
the answer is 5 because 40 divided by 8 is 5