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यादृच्छिक चर x विस्तृति [-4, 1] में समान वितरण वाला है, तो x का माध्य एवं प्रसरण होगा

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  1. -1.5, 25/12
  2. -1.5, 5/12
  3. -2.5, 5/12
  4. -2.5, 1/4

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Option 1 : -1.5, 25/12
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