Answer:
81
Step-by-step explanation:
Its a perfect square and 27*3=81
Is the whole thing divided by 6 or just the 5?
Answer:
Option C) 5.62 points
Step-by-step explanation:
We are given the following in the question:
Sample size, n = 20
Sample mean score = 64
Sample standard deviation, s = 12
Degree of freedom =

We have to calculate margin of error for a 95% confidence interval.
Formula for margin of error:
Putting the values, we get,
Thus, the correct answer is
Option C) 5.62 points
You have to use the distance formula. sqrt((x2-x1)^2+(y2-y1)^2) So sqrt((4+3)^2+(-5-2)^2). sqrt(49+49). Sqrt(98). 9.89