At one high school, students can run the 100-yard dash in a mean of 15.2 seconds with a standard deviation of 0.9 seconds. The times are very closely approximated by a normal curve. Rounding to the nearest tenth of a percent as necessary, find the percent of times that are:Between 15.2 and 16.1 seconds
A. 34%
B. 68%
C. 13.5%
D. 50%
Answer: A
Mathematics
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Suppose that the distance function for the vehicle moving in a straight is given by the equation , where t represents the time of movement. How much time should be spent to maximize the distance.
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Mathematics