The number of wheels on each of the 27 robots is listed here: 4,3,3,3,6,4,2,2,2,1,3,3,3,3,4,4,3,2,8,2,2,3,4,3,3,4,2. Determine the actual proportion of sample observations that fall within the interval x̄ + 2s
Calculations for mean and standard deviation:
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