MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Question

Suppose the population mean is 20 and the variance is 25. If a sample of size 100 is drawn from this population, what is the probability that the sample mean will be larger than 21?

  a.

0.0228
  b.

0.3446
  c.

None of these
  d.

Need more information about the population distribution.
  e.

0.4290
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