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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
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/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=287,
x=30.5
hg,
s=7.4
hg. The confidence level is
99%.
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