Which of the following statements is true if the standard deviation of a process is .02 and the average is 1?
A) about 68.3% of the output will be within 1± .02
B) the specification limits are ± .02
C) the upper control limit is 1.02
D) all the above are true
E) none of the above is true

Question

Quizplus · Accepted Answer

Option A is true as per the empirical rule, approximately 68.3% of the output falls within one standard deviation of the mean in a normal distribution. Therefore, in this case, about 68.3% of the output will be within the range of 1 ± 0.02.
Option B is false as the specification limits are not mentioned in the question.
Option C is false as the upper control limit cannot be determined with only the mean and standard deviation of the process.

Which of the Following Statements Is True If the Standard