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.

walter needs to make at least 5 more cookies but no more than 40. 5 ≤ x ≤ 40

step-by-step explanation:

20 ≤ x + 15 ≤ 55

subtract 15 from all parts

20-15 ≤ x + 15-15 ≤ 55-15

5 ≤ x ≤ 40

this means how many more cookies he has to make

walter needs to make at least 5 more cookies, but no more than 40 cookies; 5 ≤ x ≤ 40

a

step-by-step explanation: