Mathematics
Mathematics, 01.08.2019 05:20, emilyanneK2540

Amarketing research company is estimating the average total compensation of ceos in the service industry. data were randomly collected from 18 ceos and the 98% confidence interval for the mean was calculated to be left parenthesis 2181260 comma 5836180 right parenthesis . what additional assumption is necessary for this confidence interval to be valid?

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