(a) How large must n be if the length of the 95% CI is to be not greater than 30? (b) How large must n be if the length of the 99% CI is to be not greater than 30?

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A confidence interval estimate is desired for the gain in a circuit on a semiconductor device. Assume that gain is normally distributed
with standard deviation o = 15.
(a) How large must n be if the length of the 95% CI is to be not greater than 30?
(b) How large must n be if the length of the 99% CI is to be not greater than 30?
(a) i
(b) i
Statistical Tables and Charts
Transcribed Image Text:A confidence interval estimate is desired for the gain in a circuit on a semiconductor device. Assume that gain is normally distributed with standard deviation o = 15. (a) How large must n be if the length of the 95% CI is to be not greater than 30? (b) How large must n be if the length of the 99% CI is to be not greater than 30? (a) i (b) i Statistical Tables and Charts
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