Calculate the probability
If 95% of data from a Normally Distributed data set is within +/- 2 Standard Deviation of the Mean, then calculate the probability of having the sample mean within +/- 2 Standard Deviation of the overall population mean.
OPTIONS
- 0.95
- 0.05
- 0.9938
- 1
ANSWER
0.95
EXPLANATION
It is 95%. As the data is normally distributed and 95% of the data is within +/- 2 sigma level, there is an probability of 95% that the sample mean will fall within this range
