consider a confidence interval. Explain whether the width of a newly calculated confidence interval would increase decrease or stay the same as the width of the original CI as a result of each of the following changes. How are and changes effected? list all changes. what components of a CI change under the following changes?

a. sample size is doubled from 400-800
b. population size is doubled from 5 million to 10 million
c. confidence level is lowered from 95% to 90%
d. significance level is lowered from 10% to 5%

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Here's a site that may help:
Statistics Tutorial: Confidence Interval