A normal population has a mean of of 60 and standard deviation of 12. A random sample of 9 is selected. The probability that sample mean is between 56 and 63 is:

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A normal population has a mean of of 60 and standard deviation of 12. A random sample of 9 is selected. The probability that sample mean is between 56 and 63
is:
Select one:
a.0.8715
b.0.6147
c.0.2734
d.0.1133
e.0.2266
Transcribed Image Text:A normal population has a mean of of 60 and standard deviation of 12. A random sample of 9 is selected. The probability that sample mean is between 56 and 63 is: Select one: a.0.8715 b.0.6147 c.0.2734 d.0.1133 e.0.2266
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