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Three coins are tossed together 400 times. 'No head' (TTT) occurred 48 times and 'three heads' (HHH) occurred 52 times. What is the empirical probability of getting at least one head and at least one tail (i.e. neither all heads nor all tails)?

Class 9Coins and DiceStatistics
  • A0.75
  • B0.25
  • C0.88
  • D0.12

Step-by-Step Solution

All-heads or all-tails = 52 + 48 = 100. The rest = 400 - 100 = 300. .
Answer: A) 0.75

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