Confidence intervals for the mean height of college students
The heights of a random sample of 50 college students yielded a sample mean of 174.5 cm, and a sample standard deviation of 6.9cm. Construct 95% UPPER and LOWER confidence intervals for the mean height of college students.
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The central limit theorem says if X1...Xn are random sample from unknown distribution with the mean u and variance σ^2, then X(bar) has approximately normal distribution with ( ) mean and ( ) variance if n is sufficiently large.
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