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

Question

Assume that we want to construct a confidence interval. Do one of the following, as appropriate: (a) find the critical value t/2. (b) find the critical value z/. 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 = 292, x-32.8 hg, s-6.3 hg. The confidence level is 99% Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A. ta/2 (Round to two decimal places as needed.) Za/2 (Round to two decimal places as needed.) Neither the normal distribution nor the t distribution applies C.

Explanation / Answer

as even we do not know shape of distribution; because sample size is sufficiently large we can have t distribution

option A is correct with talpha/2 =2.59

please revert

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