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A CI is desired for the true average stray-load loss ? (watts) for a certain type...

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 ? = 2.9. (Round your answers to two decimal places.) (a) Compute a 95% CI for ? when n = 25 and x = 57.2. , watts (b) Compute a 95% CI for ? when n = 100 and x = 57.2. , watts (c) Compute a 99% CI for ? when n = 100 and x = 57.2. , watts (d) Compute an 82% CI for ? when n = 100 and x = 57.2. , watts (e) How large must n be if the width of the 99% interval for ? is to be 1.0? (Round your answer up to the nearest whole number.) n =

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