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do the following

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Question

Given P(A style=”color:rgb(0,0,0);”>) = 0.3 and P(B) = 0.6, do the following.(a) If A and B are mutually exclusive events, compute P(A or B).  
(b) If P(A and B) = 0.1, compute P(A or B).

 
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what is the value of P(A | B)?

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If two events A style=”color:rgb(0,0,0);”> and B are independent and you know that P(A) = 0.50, what is the value of P(A | B)? 

 
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John runs a computer software store

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John runs a computer software store. Yesterday he counted 127 style=”color:rgb(0,0,0);”> people who walked by the store, 58 of whom came into the store. Of the 58, only 23 bought something in the store. (Round your answers to two decimal places.)(a) Estimate the probability that a person who walks by the store will enter the store.  
(b) Estimate the probability that a person who walks into the store will buy something.  
(c) Estimate the probability that a person who walks by the store will come in and buy something.  
(d) Estimate the probability that a person who comes into the store will buy nothing. 

 
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A recent survey of 1030 U.S. adults

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A recent survey of 1030 U.S. adults

selected at random showed that 681 consider the occupation of firefighter to have very great prestige. Estimate the probability (to the nearest hundredth) that a U.S. adult selected at random thinks the occupation of firefighter has very great prestige.

 
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