Suppose the length of time for a Help Desk to resolve an issue is skewed to the right with a population mean of 15 minutes and a population standard deviation of 5.1 minutes. What statistical technique could be used to determine the proportion of times to resolution that are between 8.8 and 21.2 minutes? O Coefficient of Variation O Empirical rule O Conditional probability O Binomial distribution O Chebyshev's Inequality9, 67, 19, 8, 18, 8, 15, 8, 5, 16 Find the interquartile range (IQR), also known as the range of the middle 50% of the data. O 18.25 12.00 O 8.00 O 62.00 10.25