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# CG Q5b # Usie betastats to compute a 95% confidence interval for the ########## change in charges for being a smoker. ########## Use a

# CG Q5b # Usie betastats to compute a 95% confidence interval for the ########## change in charges for being a smoker. ########## Use a single line of code and 1.96 for the critical value. ########## Do not type out numbers (except for 1.96)

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