The life of a battery used in a designer dog collar is assumed to be approximately normally distributed. A random sample of 10 such batteries is selected and placed on accelerated life test yielding the following results (measured in hours): 100 93 112 102 97 95 108 96 115 125 Use this data to complete Questions 1 - 4. Questions 1 - 4 are each worth 1 point. 1. Find the mean battery life. 2. Find the median battery life. 3. Find the variance for the battery life