Mathematics, 02.11.2019 09:31, juuuuuu42

Assume that we want to construct a confidence interval. do one of the following, as appropriate: (a) find the critical value t sub $\alpha$ /2, (b) find the critical value z sub $\alpha$ /2, or (c) state that neither the normal distribution nor the t distribution applies.
here are summary statistics for randomly selected weights of newborn girls: n=249, x bar =29.9 hg, sequals=7.2 hg. the confidence level is 95%.

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Assume that we want to construct a confidence interval. do one of the following, as appropriate: (a...