Upper confidence limit for interval
A researcher estimates the 95% CI for a sample with a mean of M = 3.26 and a standard error (?m) of 0.91. What is the upper confidence limit for this interval?
A) 1.48
B) 2.35
C) 4.17
D) 5.04
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To test the hypothesis H0: ? = 100 vs. H1: ? > 100, a z-score of 2.8 is calculated. The probability of observing a z-score of 2.8 or one that is even larger, assuming the true mean is really equal to 100, is
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