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Interval estimates for proportions — Question 265

Original QCE Vault practice · 1 mark

Q265 · Practice questionTechnology-freeSimple familiar1 mark

QUESTION 265

For a fixed sample, increasing the confidence level from 90%90\% to 99%99\% produces an approximate confidence interval that is
(A)
wider with a smaller centre.
(B)
narrower with the same centre.
(C)
wider with the same centre.
(D)
the same width with a larger centre.
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