Question

В сред­нем из каж­дых 80 по­сту­пив­ших в про­да­жу ак­ку­му­ля­то­ров 76 ак­ку­му­ля­то­ров за­ря­же­ны. Най­ди­те ве­ро­ят­ность того, что куп­лен­ный ак­ку­му­ля­тор не за­ря­жен.

Answer 1

1) 80 - 76 = 4 аккумулятора не заряжены
2) 4 : 80 = 1/20 - вероятность того, что куп­лен­ный ак­ку­му­ля­тор не за­ря­жен

Answer 2

Calculation of Probability

To find the probability that a purchased battery is not charged, we can use the information provided. According to the given data, out of every 80 batteries sold, 76 are charged. Therefore, the probability that a battery is charged is 76/80, or 0.95.

Since we want to find the probability that a battery is not charged, we can subtract the probability of a charged battery from 1. Therefore, the probability that a purchased battery is not charged is 1 - 0.95, which equals 0.05 or 5%.

Please note that the calculation assumes that the probability of a battery being charged is consistent for all batteries sold.