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  3. assume that we want to construct a confidence inte

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

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Basic Math

Assume that we want to construct a confidence interval. Do oneof the​ following, as​ appropriate: (a) find the critical valuetα/2​, ​(b) find the critical value zα/2​, or​ (c) state thatneither the normal distribution nor the t distribution applies.Here are summary statistics for randomly selected weights ofnewborn​ girls: n=151 x = 29.1 hg S =7.6 hg The confidence level is95​%. Select the correct choice below​ and, if​ necessary, fill inthe answer box to complete your choice. A. t Subscript alphadivided by 2 tα/2 = ​(Round to two decimal places as​ needed.) B. zSubscript alpha divided by 2 zα/2 = ​(Round to two decimal placesas​ needed.) C. Neither the normal distribution nor the tdistribution applies.

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