The internal revenue service reports that the mean fedral 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 returns to study the effects of anew tax law. A... what is the probablity that the sample means tax is less than $8000. round the answer to at least four decimal place The probabilty that the sample means tax is less than $8000 is B what is the proabilty that the sample means tax is between $7600 and $8100? round the answer to at least four decimal places.
The internal revenue service reports that the
A... what is the
The probabilty that the sample means tax is less than $8000 is
B what is the proabilty that the sample means tax is between $7600 and $8100? round the answer to at least four decimal places.
The probablity that the sample mean tax is between $7600 and $8100 is
c... Find the 30th percentile of the sample means. Round the answer at least two decimal places,
The 30th percentile of the sample mean is $
D.... using the cutoff of 0.05, would it be unsual if the sample mean were less than $7600? round the answer to at least four decimal plce.
it is or is not unusual because the probabilty of the sample mean being less than $7600 is ?
e....Using a cutoff of 0.05, do you think it would be unusal that an individual pays a tax of less than $7600? assumes the variable is
yes or no because the probabilty that an individual pays a tax less than $7600 is?
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