The normal distribution: mean wt of rock loads is 46 tons

atw

New member
Joined
Apr 8, 2008
Messages
15
please help me get started. my question is:

the mean weight of loads of rock is 46.o tons with a standard deviation of 8.0 tons. If 25 loads are chosen at random for a weight check, find the probability that the mean weight of those loads is less than 44.24 tons. assume that the variable is normally distributed.
 

royhaas

Full Member
Joined
Dec 14, 2005
Messages
832
Re: The normal distribution

Start by computing the proper z-score, remembering that you are dealing with a sample mean.
 
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