For the following population of N = 6 scores: 2, 9, 6, 8, 9, 8

(a) Calculate the range and the standard deviation. (Use either definition for the range)
(b) Add 2 points to each score and compute the range and the standard deviation again. Describe how adding a constant to each score influences measures of variability.

What is the perimeter of square abcd? units units 28 units 37 units

How do i do this activity, is appreciated

Mozart lenses inc. recently introduced seelites, a thinner lens for eyelasses. of a sample of 800 eyeglass wearers, 246 said they would purchases their next pair of eyeglasses with the new lenses. lenses inc. estimates that the number of people who purchase eyeglasses in a year is 1,700,000. most eyeglasses wearer buy one new pair of eyeglasses a year. what is the annual sales potential for the new lenses.