3. The amount of time (in minutes) it took each individual in a sample of athletes to run a mile was recorded. In this particular sample, most of the athletes were able to run the mile quickly, but there were a small number of athletes who were not fast runners and needed more time to complete the mile. Two measures of center were computed for this sample: 12.9 minutes and 9.5 minutes. One of these measures is the mean and one is the median. Which measure must be the mean?

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A:

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Q: The ages of a group of 10 people are as follows: 25, 30, 35, 40, 45, 50, 55, 60, 65, and 70. Find…

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Q: the household rather than the male in the household. A coupon book was sent at random to either the…

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A: Mean = (summation Xi)/n = (5+8+7+3+2+2+5+6+1+4)/10 =4.3

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A: -