SOLUTION: Suppose that the breaking strength of a rope (in pounds) is normally distributed, with a mean of 100 pounds and a standard deviation of 15. What is the probability that a certain r
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Question 1169247: Suppose that the breaking strength of a rope (in pounds) is normally distributed, with a mean of 100 pounds and a standard deviation of 15. What is the probability that a certain rope will break before being subjected to 120 pounds? (You may need to use the standard normal distribution table. Round your answer to four decimal places.) Answer by Boreal(15235) (Show Source):
You can put this solution on YOUR website! look at the left of the curve with mean 100 and sd 15 and x of 120
z<(x-mean)/sd
< 1.33
probability rope will break is prob z < 1.33
=0.9082
