Answered: Researchers discover that 85% of people…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Related questions

Topic Video

Question

Researchers discover that 85% of people who have suffered a heart attack had periodontal disease (an inflammation of the gums). Only 29% of people that have not had a heart attack actually have periodontal disease.

a. Suppose heart attacks are rare in a community, occurring with a 10% probability. What is the probability that someone has periodontal disease?

b. What is the probability that a person with periodontal disease will have a heart attack?

Expert Solution

Given

$\begin{array}{rcl} P (h e a r t a t t a c k) & = & 0.10 \\ ∴ P (n o h e a r t a t t a c k) & = & 1 - P (h e a r t a t t a c k) \\ = & 1 - 0.10 \\ = & 0.90 \\ A l s o, \\ P (d i s e a s e | h e a r t a t t a c k) & = & 0.85 \\ ∴ P (n o d i s e a s e | h e a r t a t t a c k) & = & 1 - 0.85 \\ = & 0.15 \\ A n d P (d i s e a s e | n o h e a r t a t t a c k) & = & 0.29 \\ ∴ P (n o d i s e a s e | n o h e a r t a t t a c k) & = & 1 - 0.29 \\ = & 0.71 \end{array}$

Trending now

This is a popular solution!

Step by step

Solved in 3 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

$Research Design Formulation$

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.

Similar questions