In a regional high school swim meet, women’s times (in seconds) in the 200-yard freestyle ranged from 104.1 to 131.2. Estimate the standard deviation, using the Empirical Rule. (Round your answer to 2 decimal places.)

The ivring berlin learning center would like a possible net profit of $650,000 on its new resource manual it sells to schools. the fixed costs for producing the manual are $780,000 and the variable cost per package is $19.85. if the estimated unit sales are 1,250,000 units, what selling price unit should the ivring berlin learning center try?