From the first enterprise to the store received 20 products, from the second – 10 and from the third – 70.

From the first enterprise to the store received 20 products, from the second – 10 and from the third – 70. The probabilities of low-quality production of products at the enterprises are respectively equal to 0.02; 0.03 and 0.05. Determine the likelihood of receiving a low-quality product.

The probability of an event that the product will be from the first enterprise is 0.2; from the second – 0.1; from the third – 0.7.

Using the formula for total probability, we get:

P (A) = 0.2 * 0.02 + 0.1 * 0.03 + 0.7 * 0.05 = 0.042.

Answer: 0.042.