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qnorm(0.005, 29.11, 0.915) # lower endpoint for 99% confidence interval
qnorm(0.995, 29.11, 0.915) # upper endpoint for 99% confidence interval
qnorm(0.05, 29.11, 0.915) # lower endpoint for 90% confidence interval
qnorm(0.95, 29.11, 0.915) # upper endpoint for 90% confidence interval
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