If all other quantities remain the same, how does the indicated change affect the width of a confidence interval? (a) Increase in the level of confidence (b) Increase in the sample size (c) Increase in the population standard deviation (a) How does an increase in the level of confidence affect the width of a confidence interval? Choose the correct answer below. An increase in the level of confidence V the confidence interval. (b) How does an increase in the sample size affect the width of a confidence interval? Choose the correct answer below. An increase in the sample size V the confidence interval. (c) How does an increase in the population standard deviation affect the width of a confidence interval? Choose the correct answer below. An increase in the population standard deviation V the confidence interval.

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