A random sample of weights (in carats) of sapphires in a jeweler's collection is shown. Find the mean of the sample.                        Class Boundaries                           Frequency                                                                                                                                                     0.95-2.95                                                    19                                                                                                                                                                                     2.95-4.95                                                     14                                                                                                                                                                                  4.95-6.95                                                       9                                                                                                                                                                                 6.95-8.95                                                     14              8.95-10.95                                                      5

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