ENSURE YOU SUBMIT ONLY CORRECT AND ACCURATE ANSWERS TO THE FOLLOWING QUESTIONS!

23. A quiz consists of five multiple-choice questions, each with four possible answer choices (A, B, C, and D), one of which is correct. Suppose an unprepared student does not read the question but simply makes one random guess for each question. What is the probability that the student will get exactly five questions correct? (Round your answer, as needed.)

24. Toss a fair six-sided die 100 times, and record the up face each time. What is the probability that the up face of the die shows five dots at least 20 times?

(Round your answer, as needed.)

Both heart disease and stroke are leading causes of death in the United States. About 610,000 people die ofheart diseaseeach year. Prevention focuses on addressing high blood pressure, high LDL cholesterol and smoking. Meanwhile, there are about 130,000 deaths due tostrokeannually. Because stroke can affect mobility, it is a major cause of disability as well.

11 Does aciclovir prevent the chances of developing herpes zoster (shingles) when given during primary infection?

12 How long does it take after vaccination to become immunized against chickenpox and therefore safe to work in infectious areas?

13 Is meticillin-resistant Staphylococcus aureus (MRSA) the only major hospital-acquired infection?

14 Do you have to have antibiotics to get Clostridium difficile infection?

15 Why do some patients with rheumatic fever later progress to chronic rheumatic heart disease?

16 What is the World Health Organization recommendation for the prophylaxis of rheumatic fever after a streptococcal throat infection?

17 Does rheumatic fever have an infectious or an immunological aetiology?

18 Why is migratory polyarthritis found in rheumatic heart disease?

19 Are penicillins still the drug of choice in streptococcal infections (particularly Strep. Pneumoniae)?

20 1. How long can the antistreptolysin-O (ASO) titre remain positive after a streptococcal infection? 2. What is the effect of a suitable antibiotic on the ASO titre, if any?