Write an interval that includes all the data two standard deviations above and below the mean.

Reminder of interval notation:

(lowest number, highest number)

In the first triangle 80+20+p=180 (since sum of all angles of a triangle is 180)so p= 80also in second triangle 55+45+q=180 (since sum of all angles of a triangle is 180)so q=80so we can conclude that p=80 degrees q=80 degrees so p=q=80 degreeshence option b is correct

The answer is : 63explanation 60 times 0.05360+363

The answer is 326.78.