The following data values represent a sample. What is the variance of the sample? T = 9. Use the information in the table to help you.
х
4.
11 9 13 8
(x - 2)2 25 4
0 16 1
A. 7.7
B. 5.1
O C. 9.2
O D. 11.5

Little’s law firm has just one lawyer. customers arrive randomly at an average rate of 6 per 8 hour workday. service times have a mean of 50 minutes and a standard deviation of 20 minutes. how long does a customer spend at little’s law firm on average?

Determine the solution for mc001-1.jpeg

Erinn wrote the equation –5x + 4y = 32 to represent her hourly wage (y) and how this wage has changed during each year that she worked at a company (x). what is the rate of change in erinn's hourly wage per year?