SOLUTION: The weight of a packet of imported biscuits from a shipment is normally distributed with a mean of 500g and a standard deviation of 40g. What percentage of packets of the shipment

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Question 1127418: The weight of a packet of imported biscuits from a shipment is normally distributed with a mean of 500g and a standard deviation of 40g. What percentage of packets of the shipment weigh between 540g and 560g
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
z=(x-mean)/sd
z will be between 40/40 or +1 and 60/40 or +1.5
This probability is 0.0918 or 9.18%