Biostats SDS 328M Homework 2 Part 1-Hand work (all work and graphs must be done

Question

Biostats SDS 328M Homework 2 Part 1-Hand work (all work and graphs must be done by hand). Write your answers onto one or more separate sheets of paper Clearly mark each sheet with your name and your lab time. Round all answers to at least 3 decimal places 1. A study investigating the links between health risks and education surveyed adults in a metropolitan area and found that 19% of those without a high school degree, 15% of those with a high school degree/GED, and 7% of those with a college degree smoke cigarettes daily. a. For this analysis, what is the explanatory variable? What is the response variable? (apt) b. Would you say that smoking status and education level are independent? Justify your answer. (2pt,) c. If you randomly selected 5 people in this area who do not have a high school degree, what is the probability that at least one of them smokes daily? (3p) 2. Suppose a biology student is about to take an exam that is entirely multiple choice, where each covered question has 5 answer choices. This student only studied 60% of the material that is 60i chance that she knows the correct answer to

Explanation / Answer

a) here explanatory variable is level of education and response variable is smoking status.

b)

No as we can see that proportion of smokers is different for different smoking level therefore education level and smoking status are nt independent/

c)

P(at least one smokes daily) =1-P(none smokes daily )=1-(1-0.19)5 =0.6513

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