# Question

a. What confidence levels other than 95% are in common use?

b. What would you do differently to compute a 99% confidence interval instead of a 95% interval?

c. Which is larger, a two-sided 90% confidence interval or a two-sided 95% confidence interval?

b. What would you do differently to compute a 99% confidence interval instead of a 95% interval?

c. Which is larger, a two-sided 90% confidence interval or a two-sided 95% confidence interval?

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