Question 3 (3P b. If the exam has a total of 40 questions on it, how many would

Question

Question 3 (3P b. If the exam has a total of 40 questions on it, how many would you expect her to get wrong? (3pt) Researchers wanted to see which species of lizard (A, B, or C) is most likely to survive a bacterial infection. So they infected a total of 38 lizards and recorded how many survived 3. after 48 hours. Of the 15 species B lizards, 40% survived. For those that were species C, one more survived than died. And of the 24 lizards that died, one-third of them were species A a. Create a contingency table to display this data. (3pt) b. What proportion of these lizards in this study were either species A or B? (0.5pt) c. What is the probability that a species C lizard in this study did not survive? (0.5pt) Convriaht O 2018 Dent nf Statictios and Data Sciences IIT Anstin

Explanation / Answer

a)from given information:

b)

P(A or B) =(8+15)/38 =23/38= 0.6053

c) P(not survive|C) =7/15=0.4667

A B C total survived 0 6 8 14 not survived 8 9 7 24 total 8 15 15 38

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