The following sample was taken from a normally distributed population: 20, 27, 15, 20, 16, 22, and 13. A 95% confidence interval for the population mean using this sample is ____.
A)	19 5.603
B)	19 2.201
C)	19 8.804
D)	19 4.402
Answer:D
The following sample was taken from a normally distributed population: 20, 27, 15, 20, 16, 22, and 13. A 95% confidence interval for the population mean using this sample is ____.
A)	19 5.603 B)	19 2.201 C)	19 8.804 D)	19 4.402