Question: Using at-distribution table or software or acalculator, report thet-statistic which is multiplied by the standard error to form the margin of error for the following

Using at-distribution table or software or acalculator, report thet-statistic which is multiplied by the standard error to form the margin of error for the following cases.

a. 90

90% confidence interval for a mean with 9

9 observations.

b. 90

90% confidence interval for a mean with 19

19 observations.

c. 99

99% confidence interval for a mean with 19

19 observations.

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