Work Time Lost due to Accidents At a large company , the Director of Research found that the average work time lost by employees due to accidents was 99 hours per year . She used a random sample of 18 employees . The standard deviation of the sample was 5.2 hours . Estimate the population mean for the number of hours lost due to accidents for the company , using a 95 % confidence interval . Assume the variable is normally distributed . Round intermediate answers to at least three decimal places Round your final answers to the nearest whole number