Question: with 90% confidence, for a sample mean 325.50, sample standard deviation 13.70, and sample size 35, what is the upper confidence limit with 2 decimal

with 90% confidence, for a sample mean 325.50, sample standard deviation 13.70, 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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