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
Step-by-step explanation:
find the area as if it was a rectangle so do 14x12 then subtract the area of half a circle with a diamater of 12
Answer:
She answered 76 percent of the question correct.
Step-by-step explanation:
Convert fraction (ratio) 23 / 30 Answer: 76.6%
i think the answer is 56.55