A journal article reports that a random sample of 25 antivirus software packages was used as a basis for calculating a 98% t-based confidence interval for the true mean annual cost of an antivirus software in UAE. The resulting interval was (AED 206, AED 293). Find the margin of error (E) of the 98% t-based confidence interval. If needed, round your answer to one decimal place.

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Q: how could i also find this out on a TI-84 calculator

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