In Great Britain, medical research is evaluated by a board of ethics. Members of the board want to use a x2 test to determine whether the researchers conducting studies on drugs are independent of the companies that make the drugs. They randomly select 75 studies done during the last few years and categorize each as being favorable toward the drug being studied, neutral toward the drug, or critical of the drug. Then they contact the researchers involved and nd out whether each researcher has nancial ties to the company that makes the drug the researcher studied. They classify each researcher as having or not having ties to the company. Which of the following best expresses the hypotheses of the test? r\" H0: The researchers are independent of the companies. Ha: The researchers are not independent of the companies. r H0: The researchers are not independent of the companies. Ha: The researchers are independent of the companies. 1" H0: The researchers are independent of the companies. Ha: The researchers and the companies are dependent on each other. r\" H0: The researchers and the companies are dependent on each other. Ha: The researchers are independent of each other