Question: (a) If the sample size is small but the population distribution is normal, is the confidence level of the interval y SE larger or

(a) If the sample size is small but the population is normal, is the confidence level of the interval y ± SE larger or smaller than the answer to Exercise 6.3.21? Explain.
(b) How is the answer to Exercise 6.3.21 affected if the population of Y is not approximately normal?

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