83.6 61.9 62.5 64.6 84.1 84.9 167.6 94.9 The following sample of 50 data items was...
83.6 61.9 62.5 64.6 84.1 84.9 167.6 94.9 The following sample of 50 data items was selected randomly from a large population. 0.1 18.6 22.7 24.8 25.6 272 29.1 31.1 32.3 32.7 68.7 95.0 33.3 33.5 35.0 36.3 37.5 37.6 37.7 38.8 39.5 40.3 41. 6 42.1 46.3 47.0 47.6 49.5 51.5 55.4 57.2 57.8 75.7 95.5 97.3 75.7 75.9 78.6 82.9 97.4 97.5 98.5 The mean of this data is - 55.0 and the standard deviation is $ = 25.5. Answer the following questions: A) Find the values: - 1-5 = and 7+ 1.5 - B) How many elements are within 1 standard deviation of the mean? c) What percentage of the data is within 1 standard deviation of the mean? %. (Write the answer without % sign) D) Find the values: - 2.5 and + 25 - E) How many elements are within 2 standard deviations of the mean What percentage of the data is within 2 standard deviations of the mean? % (Write the answer without % sign)