The expected cost of Betazine therapy is $544. It is effective 57 percent of the time, with a 6 percent chance of an adverse drug reaction. The table shows data for Alphazine, a new treatment. Estimate the rate of adverse drug reactions and the expected cost of treatment. Use Excel to construct a decision tree for this problem. Should you choose Alphazine or Betazine?

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Effective 63% Adverse drug reaction No adverse drug reaction Adverse drug reaction No adverse drug reaction Ineffective 37% Probability 5% 95% 5% 95% Cost $700 $500 $800 $600