The mean attention span for adults in a certain village is 15 minutes with a standard deviation of 6.4. The mean of all possible samples of size 30, taken from that population equals _________.
A) 15
B) 0.50
C) 30
D) 2.34

Question

Quizplus · Accepted Answer

The mean of all possible samples of size 30 will still be equal to the population mean of 15 since the sample size is large enough to represent the population. Therefore, the answer is A, 15.

The Mean Attention Span for Adults in a Certain Village