The Mean Weight of Loads of Rock Is 46

question 69

Multiple Choice

The mean weight of loads of rock is 46.0 tons with a standard deviation of 10.0 tons. If 9 loads are chosen at random for a weight check, find the probability that the mean weight of those loads is less than 42.00
Tons. Assume that the variable is normally distributed.

• A) 0.1151
• B) 0.3151
• C) 0.1551
• D) 0.4008

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