# Question: Customers experiencing technical difficulty with their Internet cable hookup may

Customers experiencing technical difficulty with their Internet cable hookup may call an 800 number for technical support. It takes the technician between 30 seconds and 10 minutes to resolve the problem. The distribution of this support time follows the uniform distribution.

a. What are the values for a and b in minutes?

b. What is the mean time to resolve the problem? What is the standard deviation of the time?

c. What percent of the problems take more than 5 minutes to resolve?

d. Suppose we wish to find the middle 50% of the problem-solving times. What are the end points of these two times?

a. What are the values for a and b in minutes?

b. What is the mean time to resolve the problem? What is the standard deviation of the time?

c. What percent of the problems take more than 5 minutes to resolve?

d. Suppose we wish to find the middle 50% of the problem-solving times. What are the end points of these two times?

**View Solution:**## Answer to relevant Questions

The mean of a normal probability distribution is 500; the standard deviation is 10.a. About 68% of the observations lie between what two values?b. About 95% of the observations lie between what two values?c. Practically all ...The mean of a normal probability distribution is 400 pounds. The standard deviation is 10 pounds.a. What is the area between 415 pounds and the mean of 400 pounds?b. What is the area between the mean and 395 pounds?c. What ...According to media research, the typical American listened to 195 hours of music in the last year. This is down from 290 hours 4 years earlier. Dick Trythall is a big country and western music fan. He listens to music while ...The lifetime of plasma and LCD TV sets follows an exponential distribution with a mean of 100,000 hours. Compute the probability a television set:a. Fails in less than 10,000 hours.b. Lasts more than 120,000 hours.c. Fails ...A recent report indicated a typical family of four spends $490 per month on food. Assume the distribution of food expenditures for a family of four follows the normal distribution, with a standard deviation of $90 per ...Post your question