Among all the income tax forms filed in a certain year, the mean tax paid was $2000 and the standard deviation was $500. In addition, for 10% of all the tax forms, the tax paid was greater than $3000 each. A random sample of 625 tax forms is drawn.   Questions Question 5, Part a:  What is the probability that the average tax paid on the sampled forms is greater than $1985?   Question 5, Part b: What is the probability that in more than 60 of the sampled forms, the tax paid is greater than $3000 each?

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