Question 1116239
z=(x-mean)/sd
=(1190-1200)/50
=-.2  
Probability z< -.2 is 0.4207
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for 40 cabbages the denominator is sd/sqrt(n)
z=(-10)/50/sqrt(40)
=-10*sqrt(40)/50=-1.26
Probability z < -1.26 is 0.1038