Statistics (Confidence Interval)?A Confidence interval is desired for the tru average stray load loss for a certain type of induction when the line current is held at 10 amps for a speed of 1500 rpm. Assume that the stray-load is normally distributed with ?=3.0.
A. Compute a 95% confidence interval for ? when n=25 and Xbar=58.3
B. Compute a 99% confidence interval for ? when n=100 and Xbar=58.3
C. How large must n be if the width of the 99% confidence interval for ? is to be 1.0?
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