Question

statistics

Show your work. When using calculator function key, please indicate what key was used. A correct answer without any justification may receive no credit. You can use a calculator but no other electronic devices during the test. (50 points in total) 1. (7 pts) True or False? For any event A, P(A) = 0 means A is certain to occur. If P(B) < P(A), then event B is more likely to happen than event A. o If P(A/B) = P(A) then A and B are dependent. If P(B|A) = P(B) then A and B are independent. o If P(A and B) = P(A)P(B) then A and B are independent P(A B) = P(A and B)/P(A) bo If P(A and B) = 0 then A and B are not mutually exclusive

Answer 1

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a) p(a)= 0 7 - A is impossible event not possible to occur A. Ans: FALSE 6) P (B) < PLA) = probability of is less than oclurance of B occarance of a likely than A = B is less = Ans: FALSE C) PCAIB) = PCANB) = DCA) =) PUANB) = pla) PCB) P(B) =) A and B are independent =) ANG: FALSE d) PCAIB) = PCB) =) PCA)PIB)- PLANB) & A and B are independent 7 Ans TRUE e) PCANB) = P(A) PCB) affect on & occuranie of one event does not roccarance of other. and B are independent & ANS TRUE f) PC AIB)- PLANB) PLANB) P(B) T PCA) cs Scanned ) ANS! FALSE CamScanner

PLANB)=0 - ZAMB} = 0 3 A and B are - Ans! FALSE. mutally exclusive Scanned with