answer this questions and I NEED FULL ANSWER FOR C, D, E

4. A CI is desired for the true average stray-load loss / (watts) for a certain type of induction motor when the line current is held at 10 amps for a speed of 1500 rpm. Assume that stray-load loss is normally distributed with 0 = 3.0. a. Compute a 95% CI for u when n = 25 and x = 58.3. b. Compute a 95% CI for u when n = 100 and X = 58.3. c. Compute a 99% CI for u when n = 100 and x= 58.3. d. Compute an 82% CI for u when n = 100 and X = 58.3. e. How large must n be if the width of the 99% interval for u is to be 1.0