A statistician constructed the 95 percent confidence interval (2.3, 3.7) to estimate the slope of a regression model for a set o

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3 years ago

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A statistician constructed the 95 percent confidence interval (2.3, 3.7) to estimate the slope of a regression model for a set o

f bivariate data with 24 data values. If the sample size n changes but all other things remain the same, which of the following claims about the confidence interval is true ?
A: The interval becomes narrower if n = 20.
B: The interval width remains the same if n = 20.
C: The interval becomes wider if n = 28.
D: The interval becomes narrower if n = 28.
E: The interval width remains the same if n = 28.

Mathematics