A high school teacher believes that the poverty rate in each U.S. state can be explained by the percentage of the population who do not have a high school diploma or equivalent. The teacher collects data from each of the 50 U.S. states; a portion of the data is given below.
Which of the following Excel dialog boxes correctly runs the regression described? A)
B)
C)
D)
With normally distributed data, approximately 95% of all observations fall within how many standard deviations from the mean?
Two competing companies sell very similar products that are manufactured in plants located near each other in the United States. Company A values inventory using last-in, first-out (LIFO) and uses accelerated depreciation for plant assets. Company B values inventory using first-in, first-out (FIFO) and uses straight-line depreciation. From this information, what conclusions can an analyst draw about the gross margin reported for the two companies?
An individual is considering whether to fly or take the train for an upcoming trip. This individual works remotely for $10/hour, but will not be able to work while on the airplane or train. The flight would take two hours and cost $125; the train would take eight hours and cost $50. What are the respective total economic costs of taking the flight and taking the train?
Which of the following graphs shows a negative relationship between the two variables?
A)
B)
C)
D)
