b. + 7 8 9 10 11 12 13 Quiz Scores (out of 20 points)Q4. Given is a histogram displaying the quiz 1 scores for a class. a. Describe the shape of the distribution. b. Choose the value that most likely represents the median of the distribution. Explain why you think this. 6.7 or 7 Frequency _x D 4. 5. 6. {3 points} a. b. rcle one: 6.? {2 points} {10 points} Circle one: Male Female Other Total or 3' or b _ Vaccine _4 _ 3 1 B _ Placebo 42 :35 3:5- _' Total 46 :39 94 Q5. The two given distributions have the same mean. Without doing any calculations, identify which distribution has less variability. Explain why you think this. a. O O O O O O O O O O lllllll 7 8 9 10 11 12 13 Quiz Scores (out of 20 points) Q7. It has been estimated that only about 35% of California residents have adequate earthquake supplies. a. What is the probability that a randomly selected California resident does not have adequate earthquake supplies? Show the calculation to earn credit. b. You survey three California residents at random. What is the probability that all three do have adequate earthquake supplies? Show the calculation to earn credit. c. Suppose you randomly survey 11 California W probability that exactly 8 Total 8 86 94 a. What is the probability of someone with a vaccine developing Covid-19? To earn full credit, write your answer using probability notation, as a fraction and decimal rounded to three decimal places. b. What is the probability that someone who is male and vaccinated develops Covid-19? To earn full credit, write your answer using probability notation, as a fraction and decimal rounded to three decimal places. c. Given a subject is male, what is the probability of someone with a vaccine developing Covid- 19? To earn full credit, write your answer using ms 3 fraction and decimal Q8. Suppose that the probability distribution for the number of yea rs it takes to earn a Bachelor of Science (3.5.) degree is given in the following table: a. What is the probability that a student will take Wn a Bachelor of Science? Q6. The following table shows the number of people who developed Covid-19 in a sample of 94 total participants who developed Covid-19. Participants are organized by their reported gender and whether they received a vaccine or placebo in the trial. Vaccine Placebo Total Male 4 42 Female 3 36 Other 1 8 Total 8 86 7. (6 points) C. 8 a. {1 point) b. (2 points)