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
Answer:
3. 130
2. Open Circle at f, shaded left.
Step-by-step explanation:
Edg. 2020
Divide 5 by 89 and you get a=17.8