# Question

The mileage (in 1,000s of miles) that car owners get with a certain kind of radial tire is a random variable having an exponential distribution with a mean of 50. In addition to providing the answer, state the relevant Excel commands.

a. What is the probability that a tire will last at most 40,000 miles?

b. What is the probability that a tire will last at least 65,000 miles?

c. What is the probability that a tire will last between 70,000 and 80,000 miles?

a. What is the probability that a tire will last at most 40,000 miles?

b. What is the probability that a tire will last at least 65,000 miles?

c. What is the probability that a tire will last between 70,000 and 80,000 miles?

## Answer to relevant Questions

On average, a certain kind of kitchen appliance requires repairs once every four years. Assume that the times between repairs are exponentially distributed. In addition to providing the answer, state the relevant Excel ...The average household income in a community is known to be $80,000. Also, 20% of the households have an income below $60,000 and anoher 20% have income above $90,000. Is it reasonable to use the normal distribution to model ...Natalie Min is a business student in the Haas School of Business at Berkeley. She wishes to pursue an MBA from Berkeley and wants to know the profile of other students who are likely to apply to the Berkeley MBA program. In ...Beer bottles are filled so that they contain an average of 330 ml of beer in each bottle. Suppose that the amount of beer in a bottle is normally distributed with a standard deviation of 4 ml. a. What is the probability that ...Consider a population proportion p=0.68. a. Calculate the expected value and the standard error of P with n=20. Is it appropriate to use the normal distribution approximation for P? Explain. b. Calculate the expected value ...Post your question

0