Question

На фабриці виготовляють сумки. За день було виготовлено 170 сумок, із яких 5 сумок виявилися з прихованими дефекта- ми. Знайдіть імовірність того, що куплена в магазині сумка з цієї партії виявиться якісною.​

Answer 1

Ответ:

170-5=165 (шт) якісні

$p = \frac{165}{170} = 0.97 = 97\%$

(тільки "р" повинна бути "Р")

Answer 2

To find the probability that a bag purchased from this batch will be of good quality, we need to calculate the ratio of the number of good bags to the total number of bags in the batch.

Given that there were 170 bags produced in total and 5 bags were found to have hidden defects, we can calculate the number of good bags by subtracting the defective bags from the total:

Number of good bags = Total bags - Defective bags Number of good bags = 170 - 5 Number of good bags = 165

Now, we can calculate the probability of purchasing a good bag from this batch by dividing the number of good bags by the total number of bags:

Probability of purchasing a good bag = Number of good bags / Total bags Probability of purchasing a good bag = 165 / 170

Using a calculator, we can find that the probability is approximately 0.9706, or 97.06%.

Please note that this calculation assumes that the bags are randomly selected for purchase from the batch and that the defective bags are evenly distributed throughout the batch.