Please help me out!!!!!!!
1 answer:
You might be interested in
Looks like this
Everything in one picture
Everything in one picture
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
x =
using the ' laws of exponents '
• ×
=
• ÷
=
• ()^n =
×
=
÷
=
=
equating the exponents since bases on both sides are 7
4x = 5 - 3x
7x = 5 ⇒ x =