For a confidence level of 80% with a sample size of 32, find the critical t value.

A First Course in Probability (10th Edition)
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For a confidence level of 80% with a sample size of 32, find the critical t value.

You intend to estimate a population mean with a confidence interval. You believe the population to have a normal distribution. Your sample size is 4.
Find the critical value that corresponds to a confidence level of 99%.

 

If n=11, ¯xx¯=37, and s=20, construct a confidence interval at a 98% confidence level. Assume the data came from a normally distributed population.

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