Flag question: Question 8 Question 8 1 pts Unless you have sufficient evidence otherwise, you must assume that ______. Group of answer choices Both the null and alternative hypotheses are true. The alternative hypothesis is true. Neither the null nor alternative hypotheses are true. The null hypothesis is true. Flag question: Question 9 Question 9 1 pts Which of the following can be tested directly? Group of answer choices the null hypothesis the research hypothesis both the null and research hypotheses all hypotheses