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) A random sample of 21 children with working parents in Everett, WA, showed that the mean number of days per school term children were

) A random sample of 21 children with working parents in Everett, WA, showed that the mean number of days per school term children were absent equaled 7.5. If the estimated standard error of the mean equaled one day (!"= 1) and is unknown, what level of confidence would produce an interval that ranges from 5.7753 to 9.2247 days? (SHOW WORK for CREDIT; 1.5 pt)

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