Using the 40 LDL cholesterol levels of women listed in Data Set 1, we get this 95% confidence interval estimate: 916.591 6 s2 6 2252.119, and the units of measurement are (mg/dL)2. Identify the corresponding confidence interval estimate of s and include the appropriate units. Given that the original values are whole numbers, round the limits using the round-off rule given in this section. Write a statement that correctly interprets the confidence interval estimate of s.