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  • Please solve RD Sharma Class 12 Chapter 30 Probability Exercise Case Study Based  Question, question 1 sub question (iii) Maths textbook solution.

Please solve RD Sharma Class 12 Chapter 30 Probability Exercise Case Study Based  Question, question 1 sub question (iii) Maths textbook solution.

Answers (1)

Answer:

            (b)

Hint:

            You must know rules of solving probability

Given:

            Vinay process 50% forms, Sonia process 20% and Iqbal process 30%. Vinay has an error of 0.06, Sonia has error rate 0.04 and Iqbal has error rate of 0.03

Solution:

The total probability of committing an error = Probability Vinay processed form x Vinay’s error rate + probability Sonia processed form  Sonia’s error rate + probability Iqbal processed form x Iqbal error rate

\begin{aligned} &=50 \% \times 0.06+20 \% \times 0.04+30 \% \times 0.03 \\ &=\frac{50}{100} \times 0.06+\frac{20}{100} \times 0.04+\frac{30}{100} \times 0.03 \\ &=0.030+0.008+0.009 \\ &=0.047 \end{aligned}

So (b) is correct answer

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