SOLUTION: in a sample distribution, x=56 corresponds to z= 1 and x=47 corresponds to z= -0.50. Find the mean and standard deviation for the sample
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Question 1085086: in a sample distribution, x=56 corresponds to z= 1 and x=47 corresponds to z= -0.50. Find the mean and standard deviation for the sample Answer by Boreal(15235) (Show Source):
You can put this solution on YOUR website! z=1=(56-mean)/sd
z=-0.5=(47-mean)/sd
1sd=56-mean
-0.5 sd=47-mean
0.5 sd=-47+mean
1.5 sd=9
sd=6
substitute into the first
1=(56-mean)/6
6=56-mean
mean=50
mean 50 and sd 6
