Question: In computing a confidence interval for a population mean m, explain whether the interval would be wider, more narrow, or neither as a result of

In computing a confidence interval for a population mean m, explain whether the interval would be wider, more narrow, or neither as a result of each of the following changes. Assume that features that are not mentioned (confidence level, mean, standard deviation, sample size) remain the same.

a. The level of confidence is changed from 90% to 95%.

b. The sample size is doubled.

c. A new sample of the same size is taken, and x increases by 10.

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