Ateacher wants to know if alcohol improves test performance. he separates 24 students into three groups by random assignment. group 1 is sent to a study group for 3 hours before the test. group 2 is sent to the gym for three hours before the test, and group 3 is sent to a bar for three hours before the test. after the three hours, the students are tested. what would be the best statistical test to show if alcohol had any affect between the three groups?

You isolate an infectious substance capable of causing disease in plants, but you do not know whether the infectious agent is a bacterium, virus, viroid, or prion. you have four methods at your disposal to analyze the substance and determine the nature of the infectious agent.i. treat the substance with enzymes that destroy all nucleic acids and then determine whether the substance is still infectious.ii. microscope.iii. culture the substance on nutritive medium, away from any plant cells.iv. treat the sample with proteases that digest all proteins and then determining whether the substance is still infectious.if you already know that the infectious agent was either bacterial or viral, which method(s) listed above would allow you to distinguish between these two possibilities? a) ib) iic) ii or iiid) iv

  when we experience conflict, it threatens our needs to feel

Unsatisfied fats tend to be solid at room temperature true or false