Online Access Free CRE Practice Test

Which of the following statistical distributions can be used to compare sample means?
Response:

• A.Normal.
• B.t test.
• C.Exponential
• D.Chi-square.

In which of the following situation is it NOT advantageous to use Bayesian in reliability calculation?
Response:

• A.When no prior information is available.
• B.When both objective and subjective information must be used
• C.When each piece of new information will arrive in random error.
• D.When both continuous and discrete data will be used.

Preventive maintenance is characterized by:
I. Replacing failed/defect items as they are found in normal service use II. A planned program of tests, inspections, and/or replacements III. Replacing items just before they fail Response:

• A.I only
• B.II only
• C.I and III only
• D.I, II and III

When a new system is being developed, which of the following will be LEAST effective in speeding up the system reliability growth process?
Response:

• A.Performing systems testing and component testing simultaneously.
• B.Testing the system first to find the failed components.
• C.Attaining components reliability prior to the system test.
• D.Performing accelerating testing.

A company has produced a new module. The failure data on 40 returns are shown below.

Which of the following is the first step in the review of this situation ?
Response:

• A.Determine the location in which the failure occurred.
• B.Categorize the data by using a Pareto analysis.
• C.Identify the field service personnel who handled the returns.
• D.Find the median of the data set.