the internal Revenue Service reports that the federal government income tax paid in 2010 was 8040. assume standard deviation is 4800. the urs plans to draw 1000 samples. I NEED STEPS NOT SURE HOW TO DO ON PAPER, OR T1 84 CALCULATOR.

Part 3 of 5 (c) Find the 20 percentile of the sample mean. Round the answer to at least two decimal places The 20th percentile of the sample mean is $ Part 4 of 5 (d) Would it be unusual if the sample mean were less than $7700? Round answer to at least four decimal places. It (Choose one) v unusual because the probability of the sample mean being less than $7700 is Part 5 of 5 (e) Do you think it would be unusual for an individual to pay a tax of less than $7700? Explain. Assume the variable is normally distributed. Round the answer to at least four decimal places. (Choose one) v , because the probability that an individual to pays a tax less than $ 7700 is