If you were to calculate a confidence interval using a confidence level of 0.9 and then calculated a second confidence interval using the same data, but change the confidence level to 0.95, would the interval be more narrow or wider? What is the reason?
What will be an ideal response?
Increasing the confidence level from 0.9 to 0.95 would make the confidence interval wider. The reason is that if we want a higher degree of certainty we need to expand the interval to find the higher degree of certainty.
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