You have found the following ages (in years) of 5 zebras. The zebras are randomly selected from the 42 zebras at your local zoo: 8, 11, 17, 7, 19
Based on your sample, what is the average age of the zebras? What is the estimated variance of the ages?
You may round your answers to the nearest tenth.
Average age:

Variance:

Apackage of bacon holds 15 strips of bacon. the pancake house uses 17 packages of bacon in the morning and 21 packages in the afternoon. how many more strips were used in the afternoon than the morning?

Two years ago a man was six times as old as his daughter. in 18 years he will be twice as old as his daughter. determine their present ages.

Two farmers pay a total rent of $140 for a pasture. the first farmer placed $4 oxen in the pasture, and the second farmer placed $30 sheep in the pasture. the farmers split the rent based on the proportion of the pasture eaten by their own animals that month. how much should the first farmer pay, if 1 ox eats as much as 10 sheep in a month?