A company is studying the number of monthly absences among its 125 employees. The following probability distribution shows the likelihood that people were absent 0, 1, 2, 3, 4, or 5 days last month.

Picture

col1# of days absent 0 1 2 3 4 5
col2Probability 0.60 0.20 0.12 0.04 0.04 0
What is the variance of the number of days absent?

a. 1.1616
b. 55.52
c. 5.00
d. 1.41

Aline on the wall and a line on the floor are skew. always, sometimes, or never?

Hurry and answer this! circle x with a radius of 6 units and circle y with a radius of 2 units are shown which steps would prove the circles similar? translate the circles so they share a common center point, and dilate circle y by a scale factor of 4. translate the circles so the center of one circle rests on the edge of the other circle, and dilate circle y by a scale factor of 4. translate the circles so they share a common center point, and dilate circle y by a scale factor of 3. translate the circles so the center of one circle rests on the edge of the other circle, and dilate circle y by a scale factor of 3

Simplify a7/a4 a) 1/a3 b)-a/a2 c)a4/a3 d)a3