Question 4 of 7

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 Za/2, or (c) state that neither the normal distribution nor the t distribution applies.

OB.

This quiz: 18 point(s)

possible

This question: 1

point(s) possible

Here are summary statistics for randomly selected weights of newborn girls: n=227, x= 33.7 hg, s= 6.4 hg. The

confidence level is 99%.

Select the correct choice below and, if necessary, fill in the answer box to complete your choice.

OA. ta/25

(Round to two decimal places as needed.)

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Za/2

(Round to two decimal places as needed.)

OC. Neither the normal distribution nor the t distribution applies.

4