What critical value t* from Table C would you use for a confidence interval for the...

What critical value t* from Table C would you use for a confidence interval for the mean of the population in each of the following situations?

A 80 % confidence interval based on n = 20 observations

Solutions

Expert Solution

here sample size, n = 20, hence degrees of freedom, df = 20 - 1 = 19

80% CI indicates, the area in either tail of curve is 0.1

t-value = 1.328

orchestra answered 1 year ago

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