Which of the variables does not pass the t-test at the .05 level of significance?

A) PA
B) PB
C) A
D) I
E) All the variables pass the t-test.

B

Economics

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How do high marginal tax rates influence the growth and prosperity of countries? What type of tax policy is needed to foster economic efficiency and growth?

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What would happen to the equilibrium price and quantity of coffee if the wages of coffee-bean pickers fell and the price of tea fell?

a. Price would fall, and the effect on quantity would be ambiguous. b. Price would rise, and the effect on quantity would be ambiguous. c. Quantity would fall, and the effect on price would be ambiguous. d. Quantity would rise, and the effect on price would be ambiguous.

Economics