A Population of Flights Can Be Classified According to Two

Multiple Choice

A population of flights can be classified according to two factors: duration (short, medium, or long) and purpose (vacation or business) . We are interested in whether either of these factors has an effect on price. The table below gives mean prices for a balanced population. The average cost of a business flight is:

A) $400.
B) $2600.
C) $650.
D) $866.67.