Survey results show that 68% of people that tip their hairdresser when they get a haircut. predict how many people out of 150 tip their hairdresser.

To determine or predict the approximate number of people who tips their hairdresser, we just have to multiply the given sample space and the decimal equivalent of the given percentage. That is,
                                            (150) x (0.68) 
                                                 = 102
Thus, the answer to this item is 102 people tips their hairdressers.