Solve the Problem

Solve the problem. Round your answer to one decimal place unless otherwise indicated.
-Physiologists often use the forced vital capacity as a way to assess a person's ability to move air in and out of their lungs. A researcher wishes to estimate the forced vital capacity of people suffering from asthma. When 15 asthmatics were randomly selected and tested for their forced vital capacity, a mean forced vital capacity was obtained of 4.4 liters. Based on this sample statistic, what is the best estimate of the mean forced vital capacity
For all asthmatics?

A) 4.4 liters
B) 4.6 liters
C) 4.5 liters
D) 4.3 liters