Please explain.

[d] -Would it be unusual-if the sample mean were less than $7600? Round answer to at least fou'r decimal places. .It I (Choose one] 1' l unusual because the probabity of the sample mean being less than 57600 is B. (e) Do you think it would be unusual for an individual to pay a tax of less than $?6DD? Explain. Assume the variablefis normally distributed. Round the answer to at least four decimal places. (choose one) v l, because the probabity that an individual to pays a tax less than $7600 is Taxis: The Internal Revenue-Service reports that the mean federal income tax paid in the year 2010 was $8040. Assume that the standard deviation is $4700. The IRS plans to draw a sample of 1000 tax retums to study the effect of a new tax law. [a] What is the probabity that the, sample mean tax is less than $8100? Round the answer to; at least four decimal places. The probabty that the sample mean tax is less than 58100. is D. (b) What is'the probabity that the sample mean'tax is between $7600 and $8000? Round theanswer'to at least four decimal places. The pmbablity that the sample mean tax is between $7600 and 53000 is D . (c) Find the 10!:h percentie of the sample mean.- Round the answer to at least two decimal places. The 10th percentie of the sample mean is $[:]