Hispanic Employment: Male The following table shows the approximate number of males of Hispanic origin employed in the United States in a certain year, broken down by age group.

Age	15-24.9	25-54.9	55-64.9
Employment (thousands)	31,000	10,000	4,700

(a)Use the rounded midpoints of the given measurement classes to compute the expected value and the standard deviation of the ageXof a male Hispanic worker in the United States. (Round your answers to two decimal places.)expected value yrs old standard deviation yr(b)In what age interval does the empirical rule predict that 68 percent of all male Hispanic workers will fall? (Round youranswers to the nearest year.)

,