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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

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