Based on past experience miss olenik knows 1/5 of the mistakes on the essays she grades are grammar mistakes 1/8 of the mistakes are spelling mistakes and 1/12 of the mistakes are both grammar and spelling mistakes if an essay is selected at random what is the probability that the essay contains a grammar mistake or a spelling mistake
Answers
Answered by
0
29/120 is probability that the essay contains a grammar mistake or a spelling mistake
Step-by-step explanation:
grammar mistakes G = 1/5
spelling mistakes S = 1/8
both grammar and spelling mistakes G ∩ S = 1/12
grammar mistake or a spelling mistake = G U S
G U S = G + S - G ∩ S
=> G U S = 1/5 + 1/8 - 1/12
=> G U S = (24 + 15 - 10)/120
=> G U S = 29/120
probability that the essay contains a grammar mistake or a spelling mistake
= 29/120
Learn more:
In a Family of 3 children find probability of having at least one boy ...
https://brainly.in/question/7700718
What is the probability that a leap year 1800 has 53 thursdays ...
https://brainly.in/question/7485770
S={5, 10, 15), R={10, 15, 25, 20},Draw Venn diagram for given sets ...
https://brainly.in/question/11767413
Similar questions