Question: with 90% confidence, for sample mean 376.50, sample standard deviation 11.80, and sample size 35, what is the upper confidence limit with 2 decimal places?

with 90% confidence, for sample mean 376.50, sample standard deviation 11.80, and sample size 35, what is the upper confidence limit with 2 decimal places?

hint: what is the critical value for an 80% confidence level?

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