State whether the statements are True or False. The probabilities… - Vidyadip

Question

State whether the statements are True or False.
The probabilities that a typist will make 0, 1, 2, 3, 4, 5 or more mistakes in typing a report are, respectively, 0.12, 0.25, 0.36, 0.14, 0.08, 0.11

✓

Answer

False.
Solution:
Sum of these probabilities must be equal to 1.
P(0) + P(1) + P(2) + P(3) + P(4) + P(5)
= 0.12 + 0.25 + 0.36 + 0.14 + 0.08 + 0.11 = 1.06 which is greater than 1, So, it is false statement.

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