Need help in S1

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can anyone please show me how to calculate the probability of P(|X-160|<10)??(normal distribution) thnx in advance:)
 
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u have to find the probability?? like we find it in normal distribution but there is a modulus|X-160|.. which is the problem!!
 
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u hav C3 then u can understand easily!:p
|X-160| it will hav two equations for the modulus...1) X-160 2)-X+160 so according to 1) X-160<10 and 2) -X+160<10 after solving it the final eqn wil be P(150<X<170) and we have 2 find the probability(area) of this range...(mean=160 and standard deviation is 30)!:)
 
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