A drawing class was assigned a final project where students had to choose one art medium and one subject. The teacher kept track of the types of projects submitted. The probability that a student used crayons is 0.5, the probability that a student chose to draw a landscape is 0.9 and the probability that a student used crayons and chose to draw a landscape is 0.4. What is the probability that a randomly chosen student used crayons or chose to draw a landscape?

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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A drawing class was assigned a final
project where students had to choose one
art medium and one subject. The teacher
kept track of the types of projects
submitted.
The probability that a student used
crayons is 0.5, the probability that a
student chose to draw a landscape is 0.9
and the probability that a student used
crayons and chose to draw a landscape is
0.4.
What is the probability that a randomly
chosen student used crayons or chose to
draw a landscape?
Transcribed Image Text:A drawing class was assigned a final project where students had to choose one art medium and one subject. The teacher kept track of the types of projects submitted. The probability that a student used crayons is 0.5, the probability that a student chose to draw a landscape is 0.9 and the probability that a student used crayons and chose to draw a landscape is 0.4. What is the probability that a randomly chosen student used crayons or chose to draw a landscape?
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