THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
In a recent survey,200 top executives were asked how many hours they spend each year in community service.The data are presented below.
-Calculate the quantities 
, 
,and 
.
Definitions:
Mining Rights
Legal permissions granted to companies or individuals to extract minerals or other valuable materials from the earth.
Depletion Expense
An accounting concept used to allocate the cost associated with natural resource extraction over the period of their removal or sale.
Accumulated Depletion
The total value of natural resource extraction from a property, representing the reduction of the asset's value on the balance sheet over time.
Ore
A naturally occurring solid material from which a metal or valuable mineral can be extracted profitably.
Q29: A junior executive looking at his business
Q55: Which of the following is the graphical
Q67: A correlation coefficient of zero indicates a
Q77: The Empirical rule is frequently applied as
Q84: Would the mode be a useful summary
Q88: What is the probability that a programmer
Q103: The finishing process on new furniture leaves
Q139: Express the event "A ∩ B" in
Q267: What is P(A<sub>2</sub> |B<sub>2</sub>),rounded to two decimals?<br>A)0.33<br>B)0.35<br>C)0.65<br>D)0.67<br>
Q305: If P(A ∩B)= P(A)P(B),then A and B