Answer:
Variance = 4.68
Step-by-step explanation:
The formula for the variance is:

Where:

The mean can be calculated as each value multiplied by its probability


Replacing the mean and the summatory of X:

Answer:
73,188
Step-by-step explanation:
fees plus costs minus expenses
Answer:
4h=p
Step-by-step explanation:
This is the answer because if both the number of trees and hours is divided by three, you get 4 trees per hour. So it's 4 times (h) equals total amount of trees planted.
Answer:
Least to greatest is 81/10, 8 1/9, 8.115 and 9.95
Step-by-step explanation:
4.56 / 3.42 = 1.333 m per second (or 1 1/3m per second)