+0  
 
0
100
1
avatar

There are 90 students in a physics class. The instructor must choose two students at random.

Students in a Physics Class

Academic Year   Males   Females
Freshmen           8                 13
Sophomores      2                 10
Juniors              18                 2
Seniors               9                 5

What is the probability that a sophomore male and then a junior male are chosen at random? Express your answer as a fraction or a decimal number rounded to four decimal places.

 Feb 11, 2020
 #1
avatar+2850 
0

prob that choose male sophomore

 

2/90

 

prob that chose male junior

 

18/90

 

 

(2/90)*(18/90)= 36/8100

 

36/8100 = 0.0044444444444444

 Feb 12, 2020

40 Online Users

avatar
avatar
avatar