Acollege student is interested in testing whether business majors or liberal arts majors are better at trivia. the student gives a trivia quiz to a random sample of 30 business majors and finds the sample's average score is 86. he gives the same quiz to 30 randomly selected liberal arts majors and finds the sample's average score is 89. what is the alternative hypothesis of this test

Statements reasons 1. ab ? cd; ad ? bc 1. given 2. ac ? ac 2. reflexive property 3. ? adc ? ? cba 3. ? 4. ? dac ? ? bca; ? acd ? ? cab 4. cpctc 5. ? dac and ? bca are alt. int. ? s; ? acd and ? cab are alt. int. ? s 5. definition of alternate interior angles 6. ab ? cd; ad ? bc 6. converse of the alternate interior angles theorem 7. abcd is a parallelogram 7. definition of parallelogram what is the missing reason in step 3?