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# STA301 - Statistics and Probability GDB Discussion Due Date 23 June 2016

Question: A man opens a general store and a book shop. In any one year the probability of a robbery in the general store is 0.10 and the probability of a robbery in the book shop is 0.02. For any one year. What is the probability that:

i. Neither business will be robbed.
ii. Either one or the other (but not both) will be robbed.

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### Replies to This Discussion

What is the probability that:

i. Neither business will be robbed.
ii. Either one or the other (but not both) will be robbed.

kya probability ha 1 ki y a2 ki

abi tak to koi samja nai aa rahi

I think this will be (ii) Either one or the other (but not both ) will be robbed.

koi to post kro yr state ki

.............

thnks

Question: A man opens a general store and a book shop. In any one year the probability of a robbery in the general store is 0.10 and the probability of a robbery in the book shop is 0.02. For any one year. What is the probability that:
i. Neither business will be robbed.
ii. Either one or the other (but not both) will be robbed.

(i) Neither business will be robbed.
P (not G) = 1 - 0.10 = 0.90
P ( not B ) = 1 – 0.02 = 0.98
P (G nor B) = 0.90 * 0.98 = 0.88

(ii) Either one or the other (but not both) will be robbed.
P ( G U B ) = 0.10 + 0.02 – ( 0.10 ) ( 0.02 ) = 0.118

koi aur bataya is ka answer sahi hai k nahi? iftakhar ka

P(G)' = 1 - 0.10 = 0.90

P(B)' = 1 - 0.02 = 0.98

P(G nor B) = 0.90 * 0.98

P(G nor B) = 0.882

P(G U B) = 0.10 + 0.02 - (0.10)(0.02)

P(G U B) = 0.118

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