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Interval estimates for proportions — Question 197

Original QCE Vault practice · 1 mark

Q197 · Practice questionTechnology-freeSimple familiar1 mark

QUESTION 197

For the same sample size and sample proportion, changing from a 95% confidence interval to a 99% confidence interval will generally
(A)
decrease the margin of error
(B)
leave the margin of error unchanged
(C)
increase the margin of error
(D)
make the interval centred at zero
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