A sample of 50 student ages is taken from a bell-shaped population with a mean age (µ) of 21.2 years and standard deviation (ơ) of 2.8 years. Using the empirical rule, approximately 68% of the sample...

R5

Extracted text: A sample of 50 student ages is taken from a bell-shaped population with a mean age (µ) of 21.2 years and standard deviation (ơ) of 2.8 years. Using the empirical rule, approximately 68% of the sample mean student ages (x ) to 1 decimal place should be found in the interval between: A) 18.4 years and 24.0 years B) 20.4 years and 22.0 years C) 15.6 years and 26.8 years D) 20.8 years and 21.6 years E) 20.0 years and 22.4 years