A research teams wishes to estimate the interval of ì with a sample of size 200. Without altering their sample size, what must the researchers do to obtain a very narrow confidence interval?
A) They must accept a relatively high probability of error for their estimate.
B) They must be willing to accept low precision in their estimate.
C) They must use a very low á value for their estimate.
D) They must use a very large Z score in their calculation.

Question

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The Answer of A research teams wishes to estimate the interval of ì with a sample of size 200. Without altering their sample size, what must the researchers do to obtain a very narrow confidence interval?
A) They must accept a relatively high probability of error for their estimate.
B) They must be willing to accept low precision in their estimate.
C) They must use a very low á value for their estimate.
D) They must use a very large Z score in their calculation.

A Research Teams Wishes to Estimate the Interval of ì