# Question: Assuming the appropriate probability distribution for the situation described in

Assuming the appropriate probability distribution for the situation described in the preceding problem:

a. Find the probability that the system will last 100,000 hours or more (twice the average lifetime).

b. The system is guaranteed to last at least 5,000 hours. What percentage of production is expected to fail during the guarantee period?

a. Find the probability that the system will last 100,000 hours or more (twice the average lifetime).

b. The system is guaranteed to last at least 5,000 hours. What percentage of production is expected to fail during the guarantee period?

## Answer to relevant Questions

Compare the “probability of being within one standard deviation of the mean” for the exponential and normal distributions. You have a position open and are trying to hire a new person. Assume that the new person’s experience will follow a normal distribution with the mean and (sample) standard deviation of your current employees. a. Find the ...a. What is a systematic sample? b. What are the main problems with systematic samples? c. Why is there no reliable standard error available for use with a sample average computed from a systematic sample? Your automatic transmission factory has had some problems with quality. You have decided to gather information from tomorrow’s production for careful evaluation. For each of the following sampling methods, say if the ...Consider the percent change in revenues for the five largest soap and cosmetics firms as shown in Table 8.6.3. View this list as a (very small!) population with just N = 5 units. Consider drawing samples of size n = 2. a. ...Post your question