Solve the problem.
A machine is supposed to fill juice bottles with 16 fluid ounces of juice. The manufacturer picks a sample of bottles which have been filled by the machine and determines the volume of juice in each bottle. The results are shown in the stem-and-leaf diagram below. The leaf unit is 0.1.
What is the smallest volume of juice (in fluid ounces) measured for the bottles sampled?
◦ 16 fluid ounces
◦ 151 fluid ounces
◦ 15 fluid ounces
◦ 15.1 fluid ounces