A certain company offers seven annual salary levels (dollars): 12000, 15000, 18000, 24000, 35000, 50000 and 70000. The number of employees paid at each level are, respectively: 3000, 2500, 1500, 1000, 400, 100 and 25. Write m-file to find the following: (a) The average salary level. (b) The number of employees above and below this average salary level (Use logical vectors). (c) The average salary earned by an individual in the company (i.e., the total annual salary bill divided by the total number of employees).

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