The lifetime of a certain brand of tires is normally distributed. The avergae lifetime of a tire is 50,000 miles with a lifetime standared deviation of 8,400 miles. The probability that a random selected tire will last beyond 55,000 miles is a. 0.2267 b. 0.7257 c. 0.0000 d. 0.2743
The lifetime of a certain brand of tires is normally distributed. The avergae lifetime of a tire is 50,000 miles with a lifetime standared deviation of 8,400 miles. The probability that a random selected tire will last beyond 55,000 miles is a. 0.2267 b. 0.7257 c. 0.0000 d. 0.2743
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 11ECP: A manufacturer has determined that a machine averages one faulty unit for every 500 it produces....
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The lifetime of a certain brand of tires is
a. 0.2267
b. 0.7257
c. 0.0000
d. 0.2743
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