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In: Math

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

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

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

3. Finally, compare the 95% confidence intervals across groups. Is there any overlap in the intervals or is one interval completely greater 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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