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find which of the following changes would make a confidence interval for one population mean wider (assume that nothing else changes) a. Changing from a

find which of the following changes would make a confidence interval for one population mean wider (assume that nothing else changes)

a. Changing from a sample standard deviation of 3 to a sample standard deviation of 2.5

b. changing forma. sample size of 30 to a sample size of 20

c. changing from a 95% level of confidence to a 90% level of confidence.

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