Answer :
The statement "To obtain a 99.7 percent confidence level in a "p" chart we would use a value of 3 for "z" is true. In a standard normal distribution, a "z" value of 3 corresponds to a confidence level of around 99.7%. Option A.
In statistics, a "p" chart is a control chart used for the proportion of nonconforming units in a sample.
The "z" value represents the number of standard deviations from the mean. In a standard normal distribution, a "z" value of 3 corresponds to a confidence level of around 99.7%.
Thus, in order to obtain a 99.7 percent confidence level in a "p" chart, we would use a value of 3 for "z".
This principle is often referred to as the three-sigma rule or the 68-95-99.7 rule because 68%, 95%, and 99.7% of the data falls within one, two, and three standard deviations from the mean, respectively.
Hence, the correct answer is True. Option A.
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