Solution :
It is given that :
Number of students in a random sample majoring in communication or psychology at an university = 250
Total number of students majoring in psychology = 100
Number of students majoring in psychology those who are happy = 80
So number of students majoring in psychology those who are not happy = 20
Total number of students majoring in communication = 250 - 100 = 150
Number of students majoring in communication those who are happy = 115
So number of students majoring in psychology those who are not happy = 35
a). Probability of the students happy with their major choices are

= 0.78
b). Psychology major 
= 0.4
c). Probability of the students who are happy with the communication as the choice of major =
= 0.46
d). Students unhappy with their choice of major given that the student is psychology major =
= 0.018
Answer:
378
Step-by-step explanation:
300
70
8
+-------
378
Answer:
Step-by-step explanation:
2006053?
Answer: type it out and i could solve it for ya
Step-by-step explanation:all you need to do is write it out.
Answer:
76
Step-by-step explanation:
–4(x – 26) = –200
–4x + 104 = –200
–104 –104
–4x/–4 = –304/–4
x = 76