d) Construct the intervals ī±s, ī±2s,±3s. Count the number of observations that fall within each interval and find the corresponding proportions. Compare your results with that of Chebyshev's inequality. Do you detect any outliers? e) Find the 75th percentile for the data on total daily man-hours. f) Construt a stem and leaf display for the data and comment on it. 8) Construct a box-plot and comment on it.

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