The dot plot shows the number of push-ups that 13 members of a fitness class can do in one minute.

1.  What is the probability that a member selected at random from the class can do more than 38 push-ups in one minute?   (1 mark)
   

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2.  A new member who can do 32 push-ups in one minute joins the class.

    

   Does the addition of this new member to the class change the probability calculated in part (a)? Justify your answer.   (1 mark)
   

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