Posted by **Harley** on Tuesday, June 28, 2011 at 12:59pm.

Weights of a certain model of fully loades gravel trucks follow a normal distrbution with mean = 6.4 tons and standard deviation = 0.3 ton. Waht is the probability that a fully loaded truck of this model is

a. less than 6 tons?

b. more that 7 tons?

c. between 6 and 7 tons?

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