A medical study finds that ¯=114.9 and =9.3 for the seated systolic blood pressure of 27 randomly selected adults.

What is the standard error of the mean? Interpret this value in context.


A)If we take many samples of size 27, the sample mean blood pressure will typically vary by about 4.2556 from the population mean blood pressure.

B)If we take many samples of size 27, the sample mean blood pressure will typically vary by about 1.7898 from the population mean blood pressure.

C)If we take many samples of size 27, the sample mean blood pressure will typically vary by about 0.5869 from the population mean blood pressure.

D)If we take many samples of size 27, the sample mean blood pressure will typically vary by about 22.1125 from the population mean blood pressure.

E)If we take many samples of size 27, the sample mean blood pressure will typically vary by about 0.3444 from the population mean blood pressure.