If the weight of female high school students closely follows the normal distribution with a mean of 125 pounds and a standard deviation of 5 pounds, what range of weights includes the middle 80% of the girls in high school?
Is it a) 122.3 to 127.1, b) none of these, c) 118.6 to 131.4, d) 120.8 to 129.2, e. 116.8 to 133.2