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  3. 1. how did you construct the confidence interval (

1. How did you construct the confidence interval (put the formula into words) and Please mention...

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Basic Math

1. How did you construct the confidence interval (put theformula into words) and Please mention how to find your criticalvalues

2. . And then I need two comparisons/contrasts: compare the 90%and 95% confidence intervals within a group, is one longer than theother? If so, why?

3. Finally, compare the 95% confidence intervals across groups.Is there any overlap in the intervals or is one interval completelygreater than the other?

mean: 24025.4 (NY) and 12247.21 (TX)

std. deviation: 16049.05(NY) and 9448.70(TX) respectively

And sample size n=50 for both

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