Homework 2

Due 10/18/24

Directions

Please turn in this homework on Sakai. Please submit your homework in pdf format. You can type your work on your computer or submit a single file with photos of your written work or any other method that can be turned into a pdf. The Adobe Scan phone app is an easy way to scan photos and compile into a PDF. Please let me know if you greatly prefer to submit a physical copy. We can work out another way for you to turn in homework.

Exercises

• Book exercises are in the last section of the chapter.
• Book exercises are numbered as chapter#.exercise#. For example, exercise 1.4 is Chapter 1 #4, which is on pg. 76.

2.6 Poverty and language

2.8 School absences

2.10 Health coverage, frequencies

2.14 Health coverage, relative frequencies

2.18 Predisposition for thrombosis

2.24 Breast cancer and age

Non-book exercise

Suppose a patient has abdominal pain and their clinician suspects that they either have disease 1, disease 2, or no disease, where the probability of having abdominal pain if they have disease 1 is 0.80, the probability of having abdominal pain if they have disease 2 is 0.90, and the probability of having abdominal pain if they have no disease is 0.01. Based on the patient’s medical history, the probability of having disease 1 is 0.009, having disease 2 is 0.001, and having no disease is 0.99. What is the probability the patient has disease 2 given that they have abdominal pain?