Refer to Exercise 2.115.
(a) Determine the intervals ± s, ± 2 s, and ± 3 s.
(b) What proportions of the measurements lie in those intervals?
(c) Compare your findings with the empirical guidelines for bell-shaped distributions.
In Exercise 2.115

3.58 3.80 4.0 4.01 4.05 4.05 4.12 4.18 4.20 4.2 4.27 4.28 4.30 4.32 4.33 4.35 4.35 4.41 4.42 4.45 4.45 4.50 4.50 4.50 4.50 4.51 4.52 4.52 4.52 4.57 4.58 4.60 4.61 4.61 4.62 4.62 4.65 4.70 4.70 4.70 4.70 4.72 4.78 4.78 4.80 5.075.20 5.26 5.41 5.48