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    Devry University
    Sep-2004 - Aug-2010

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Category > Psychology Posted 20 Oct 2017 My Price 10.00

the probability of A OR B

Two hundred raffle tickets are sold. Your friend has five people in her family who each bought two raffle tickets. What is the probability that someone from her family will win the raffle?

           A researcher knows that the average distance commuting students live from campus was previously 8.2 miles. Because of the rising prices of gasoline, the research wants to test the claim that commuting students now live closer to campus. What is the correct alternative hypothesisThe new mean distance is 8.2 miles.

           If the probability of event A is 0.45 and the probability of event B is 0.35 and the probability of A and B occurring together is 0.25, then the probability of A OR B is:(Points : 4)        0.8            

       1.8           

       0.1575       

       0.55
       The new mean distance is less than or equal to 8.2 miles.
       The new mean distance is less than 8.2 miles.
       The new mean distance is greater than or equal to 8.2 miles.

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CourseLover
(12)
Status NEW Posted 20 Oct 2017 02:10 PM My Price 10.00

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