Question

The probability of picking non defective item from a sample is 7/12 find the probability of picking a defective item

Answer 1

Answer:

The probability of picking a defective item is = 5/12

Step-by-step explanation:

Given even A and B, and that event A is the opposite of event B, their probabilities are given by:

Let the probability of getting A be x.

The probability of getting B is given by:

P(B) = 1 - P(A) = 1 - x

This rule applies to the given question.

Given the probability of picking non-defective item = 7/12, the probability of picking a defective item is:

= 1 - 7/12 = 5/12

The probability of picking a defective item is = 5/12

Answer 2

The probability of picking a defective item is equal to $\dfrac{5}{12}$.

Step-by-step explanation:

Given,

The probability of picking non defective item from a sample = $\dfrac{7}{12}$

To find, the probability of picking a defective item = ?

We know that,

The probability of picking non defective item from a sample + The probability of picking a defective item = 1

⇒ The probability of picking a defective item = 1 - The probability of picking non defective item from a sample

= 1 - $\dfrac{7}{12}$

= $\dfrac{12-7}{12}$

= $\dfrac{5}{12}$

∴ The probability of picking a defective item = $\dfrac{5}{12}$

Thus, the probability of picking a defective item is equal to $\dfrac{5}{12}$.