Question 7 of 14 The mean annual salary of a sample of 275 office managers is $58,840 with a standard deviation of $8,140. Calculate the margin of error and construct the 98% confidence interval for the true population mean annual salary for office managers. We may assume that the sample standard deviations is an accurate approximation of the population standard deviation o (e. s-0) given that the sample size is so large in > 2009 Standard Normal Distribution Table E= 50 Round to the nearest dollar 50 < < Round to the nearest dollar 50 SUBMIT QUESTION