Question: Three hundred widgets are manufactured with the following normal error distribution statistics: mean = 123 units, standard deviation is (a) 23 units, (b) 32.5 units,

Three hundred widgets are manufactured with the following normal error distribution statistics: mean = 123 units, standard deviation is

(a) 23 units,

(b) 32.5 units, 

(c) 41 units. How many will measure less than 140. units?

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