Answer:
Step-by-step explanation:
Given : P(A)=0.60 and P(B)=0.30
We will say A and B are independent events if :
Thus , A and B are independent events if :
35 : 10 = 7*5 : 2*5 = 7 : 2
Thus 35 : 10 = 7 : 2;
but 35:10 ≠ 7:5
Answer:
(x - y) (x+y -1)
Step-by-step explanation:
<u>See steps of factorization:</u>
- x² - y² - x + y =
- (x² - y²) - (x - y) =
- (x - y) (x + y) - (x- y) =
- (x - y) (x+y -1)
Answer:
Step-by-step explanation:
Given : Giving a test to a group of students, the grades and gender are summarized below
A B C Total
Male 8 10 7 25
Female 6 13 14 33
Total 14 23 21 58
Total students = 58
Total number of students got A = 14
P(students got A)
Total number of students got A and not female = 8
P( students got A and not female ) =
Now , By conditional probability ,
P(NOT a female | got a "A" ) =
∴ The probability that the student was NOT a female that got a "A" is .
Answer:
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