Suppose a 95% confidence interval for µ has been constructed.If it is decided to

Question

Suppose a 95% confidence interval for µ has been constructed.If it is decided to take a larger sample and to decrease theconfidence level of the interval, then the resulting interval widthwould. (Assume that the sample statistics gathered would not changevery much for the new sample.)

a. be larger than the current interval width
b. be narrower than the current interval width
c. be the same as the current interval width
d. be unknown until actual sample sizes and reliability levels weredetermined

Explanation / Answer

Answer : b. be narrower than the current interval width

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