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Mathematics, 17.12.2019 23:31 diiamondgraham1
A100(1 − α)% confidence interval for the mean μ of a normal population when the value of σ is known is given byleftparen1.gifx − zα/2 ·σsqrt1a. gif n, x + zα/2 ·σsqrt1a. gif nrightparen1.gif. by how much must the sample size n be increased if the width of the ci above is to be halved? halving the length requires n to be increased by a factor of .if the sample size is increased by a factor of 49, what effect will this have on the width of the interval?
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A100(1 − α)% confidence interval for the mean μ of a normal population when the value of σ is known...
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