Question

The probabilities that a typist will make $0,1,2,3,4,5$ or more mistakes in typing a report are, respectively, $0.12,0.25,0.36,0.14,0.08,\mathrm{0.11.}$

• A. True
• B. False
• C. Either
• D. Neither

Answer 1

The correct option is B False

Probability to make 0 mistake = 0.12
Probability to make 1 mistake = 0.25
Probability to make 2 mistake = 0.36
Probability to make 3 mistake = 0.14
Probability to make 4 mistake = 0.08
Probability to make 5 mistake = 0.11
Sum of the probability = 0.12 + 0.25 + 0.36 +0.14 +0.08+0.11 = 1.06
Sum of the probability is greater than 1, therefore, it is not possible.