SOLUTION: The breaking strength (in pounds) of a certain new synthetic is normally distributed, with a mean of 165 and a variance of 25. The material is considered defective if the breaking

Question 879565: The breaking strength (in pounds) of a certain new synthetic is normally distributed, with a mean of 165 and a variance of 25. The material is considered defective if the breaking strength is less than 154 pounds. What is the probability that a single, randomly selected piece of material will be defective? (You may need to use the standard normal distribution table. Round your answer to four decimal places.)
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!
Population: mean of 165 and a variance of 25
P(x < 154) = P(z < -11/25) = P(z < -.44) = .3300 0r 33% chance
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