At a school s open house T shirts and sweatshirts were sold Each item was...
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At a school s open house T shirts and sweatshirts were sold Each item was purchased by either a student or a parent The two way frequency table summarizes a random sample of 50 items sold that night Student Parent T shirt 12 18 Sweatshirt 11 9 Let student be the event that an item randomly chosen from among those sold was purchased by a student Let T shirt be the event that an item randomly chosen from among those sold was a T shirt Find the following probabilities Write your answers as decimals If necessary consult a list of formulas a P T shirt 0 24 b P student and T shirt 0 82 NUME c P student T shirt
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