اختبار شهادة البيانات CompTIA Data+

الخيارات

• A There is a 95% probability that a sample is within one standard deviation of the mean.
• B A stated range may contain 95% of the population mean, 95% of the time.
• C A set of ranges contains the population mean with 95% certainty.
• D A range contains 95% of the population mean.