50 resisters from a lot of 75,000 were tested. The average was 3,306 ohms with a variance of 21,609 ohm 2 . From this information, we may conclude with 99% confidence, that at least 95% of this lot will have resistance values in the range of Response:

• A.2927 - 3,685 ohms
• B.2,846 - 3,766 ohms
• C.3,012 - 3,600 ohms
• D.2,865 - 3,747 ohms

Comment: *

Name: *

Email: *

Verification: *

According to the Reliability Analysis Center, which of the following design objectives is NOT supported by reliability and maintainability contributing tasks?
Response:

• A.Determine the feasibility of consistent product manufacture.
• B.Use of proper parts and correct application.
• C.Understand the impacts on design performance.
• D.Design validation.

Comment: *

Name: *

Email: *

Verification: *

The "least squares" description in regression analysis pertains to:
Response:

• A.The average of the actual data minus the average of the predicted data.
• B.Sums of the squares of the deviations from the predictions.
• C.The error term in the equation.
• D.Averages of the predicted values.

Comment: *

Name: *

Email: *

Verification: *

A device has a MTBF of 400 hours. Assuming an exponential distribution of time to failure, what is the maximum time of allowable operation if a reliability of .995 is required?
Response:

• A.0.02 hours
• B.0.2 hours
• C.2 hours
• D.20 hours

Comment: *

Name: *

Email: *

Verification: *

Certain functional tests can be conducted for electronic equipment in the areas of:
I. Endurance testing.
II. Voltage transients
III. Electromagnetic effects.
IV. Wearout determination.
Response:

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

Comment: *

Name: *

Email: *

Verification: *