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 = 59.1. 57.96 ✓ 60.24 watts (b) Compute a 95% CI for when n = 100 and 59.1. 58.53 ✓ 50.67 ✔) was watts (c) Compute a 99% CI for when n = 100 and x = 59.1. 58.35 ✓ 59.85 ✔) watts (d) Compute an 82% CI for when n = 100 and 59.1. 50.67 x 58.35 x 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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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 μ when n = 25 and x = 59.1.
✓
60.24
watts
57.96
(b) Compute a 95% CI for when n = 100 and x = 59.1.
58.53
✓
59.67
✔
watts
(c) Compute a 99% CI for μ when n = 100 and x = 59.1.
59.85
✔
watts
58.35
(d) Compute an 82% CI for when n = 100 and x = 59.1.
H
x
58.35
59.67
"
x )w.
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 =
Transcribed Image Text: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 μ when n = 25 and x = 59.1. ✓ 60.24 watts 57.96 (b) Compute a 95% CI for when n = 100 and x = 59.1. 58.53 ✓ 59.67 ✔ watts (c) Compute a 99% CI for μ when n = 100 and x = 59.1. 59.85 ✔ watts 58.35 (d) Compute an 82% CI for when n = 100 and x = 59.1. H x 58.35 59.67 " x )w. 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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