A bag has 3 red and 7 white beads. A bead is taken and replaced 200 times. The expected number of red beads is:

  1. 60
  2. 30
  3. 140
  4. 70
Answer

A) 60

P( red) = 310; 200 310 = 60. SLO M-09-C-07 · Understanding

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