Find the standard deviation. Round your answer to two decimal places as needed. 14.7,12.4,28,27.2,12.8,14.9 262.8734 6.62 X 6.13 7.25 In a certain distribution of numbers, the mean is 50 and the standard deviation is 6. What can you say about the percentage of numbers that lie between 35 and 65? Round your answer to the nearest percentage. Use Chebyshev's theorem to solve the problem. E) at least 84% at least 86% at least 60% x at least 16% The weights (in pounds) of 18 randomly selected adults are given below. Find the twenty-eighth percentile, P28. 120 165 187 143 119 132 127 156 179 159 180 202 114 146 151 168 173 144 @ 132 X 138 143 127 At one high school, the mean time for running the 100-yard dash is 15.2 seconds with a standard deviation of 0.9 seconds. The times are very closely approximated by a normal curve. Find the percent of times that are greater than 16.1 seconds. Round your answer to the nearest whole percent. E) X 2% 15% 15.5% 13.5% Find the percent of the total area under the curve between 2 = - 2.49 and z = 1.19. Round your answer to the nearest tenth of a percent. E> 37.7% X 11.1% 86.8% 11.3%