Table 2 below gives the distribution of the number of hours that 50 persons spent learning to drive before they pass the driving test. Table 2 No. of hours Persons 0.5 to 5.5 6 5.5 to 10.5 12 10.5 to 15.5 19 15.5 to 20.5 20.5 to 25.5 25.5 to 30.5Suppose that the average age of the persons who pass the driving test is 20 years with a variance of 16 years. Compare the variations of age and number of hours the people spend learning to drive. Which is more dispersed?Calculate the standard deviation number of hours spent by drivers before they pass the driving test. Type final answer in 2 decimal places