A tire manufacturer advertises, "the median life of our new all-seasonradial tire is 120,000 km. An immediate adjustment will be made on any tire that does not last 120,000 km." You purchased four of these tires. What is the probability that all four tires will wear out before traveling 120,000 km?
A) 1/10 or 0.10
B) ¼ or 0.25
C) 1/64 or 0.0156
D) 1/16 or 0.0625

Question

Quizplus · Accepted Answer

The median life of the tire is 120,000 km, meaning 50% of tires last less than 120,000 km. The probability that one tire wears out before 120,000 km is 0.5. For four tires, the probability is (0.5)^4 = 0.0625.

A Tire Manufacturer Advertises, "The Median Life of Our New