12. Calculate the standard deviations for the following set of measurements: a) 10, 8, 6, 0, 8, 3, 2, 8, 0 b) 20, 1, 2, 5, 4, 4, 0

gaddgad

step-by-step explanation:

if you use photomath right away it will give you the answer not like this app that you have to wait for people.

1/2*qr*rs

step-by-step explanation:

9 sandwiches per hour

step-by-step explanation:

when we have a rate, we want a 1 in the denominator

27/3 = 9

27 sandwiches/ 3 hours = 9 sandwiches/hour