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A sample is drawn from a normal population with a mean of 100 and standard deviation of 20.
If X represents the sample mean and n represents the sample size, which result is least likely to occur?? and Why??
a) X = 105 and n = 25
b) X = 103 and n = 25
c) X = 105 and n = 50
d) X = 103 and n = 50
e) can't be determined from the given information
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