Question

Q:3 A coin is tossed 20 times. Make a table for frequency of occuring. Head or tail and find the probability to get Head or Tail. Ans:​

Answer 1

Step-by-step explanation:

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Suppose a fair coin is tossed 20 times. What is the probability of getting at least one head? This is one of many probability problems that is solved most easily by looking at the probability of the complementary event. The event in question is “getting at least one head”; the complementary event is “getting no heads.” Since the complementary event is also “getting all tails,” its probability is just (.5)^20. Therefore the probability of the event in question is just

1 - (.5)^20

Answer 2

Answer:

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