In response to a complaint that a particular tax assessor (A) was biased, an experiment was conducted to compare the assessor named in the complaint with another tax assessor (B) from the same office. Eight properties were selected, and each was assessed by both assessors. The assessments (in thousands of dollars) are shown in the table.
Paired T-Test and CI: Assessor A, Assessor B
Paired T for Assessor A - Assessor B
T-Test of mean difference = 0 (vs > 0):
T-Value = 2.82 P-value = 0.013
a. Do the data provide sufficient evidence to indicate that assessor A tends to give higher assessments than assessor B?
b. Estimate the difference in mean assessments for the two assessors.
c. What assumptions must you make in order for the inferences in parts a and b to be valid?
d. Suppose that assessor A had been compared with a more stable standard-say, the average of the assessments given by four assessors selected from the tax office. Thus, each property would be assessed by A and also by each of the four other assessors and (xA -) would be calculated. If the test in part a is valid, can you use the paired-difference t-test to test the hypothesis that the bias, the mean difference between A's assessments and the mean of the assessments of the four assessors, is equal to 0? Explain.
This question was answered on: Jul 11, 2017
Need a similar solution fast, written anew from scratch? Place your own custom order
We have top-notch tutors who can help you with your essay at a reasonable cost and then you can simply use that essay as a template to build your own arguments. This we believe is a better way of understanding a problem and makes use of the efficiency of time of the student. New solution orders are original solutions and precise to your writing instruction requirements. Place a New Order using the button below.