Question 486396
the empirical probability that she receive an A is equal to .075 or 7.5%.
this is because, historically, 7.5% of the students who took mr. doodle's course have gotten an A.


the table below shows the probability of getting any specified grade in mr. doodle's course based on past experience.


the probability is equal to the proportion of the population who got that grade.
100% times the proportion equals the percent.


45/600 = .075 * 100% = 7.5%


<pre>
45	  	number of people who got A *****		
180	  	number of people who got B		
210	  	number of people who got C		
95	  	number of people who got D		
65	  	number of people who got F		
5	  	number of people who got I		
	  			
600	  	total number of people		
	  			
0.075	  	ratio of people who got A  *****	
0.3	  	ratio of people who got B		
0.35	  	ratio of people who got C		
0.158333333  	ratio of people who got D		
0.108333333  	ratio of people who got F		
0.008333333  	ratio of people who got I		
	  			
1	  	total ratio (should be equal to 1)		
</pre>