If the sample standard deviation of a sample N = 1001 is 2.60 and sample mean is 2.94, then
A. estimate standard error is .8.
B. the upper bound with 95% confidence level is 3.10.
C. the lower bound with 95% confidence level is 2.78.
D. the Z value corresponding to a 95% confidence level is 2.58.
Ans:
B. the upper bound with 95% confidence level is 3.10.
C. the lower bound with 95% confidence level is 2.78.
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