Question

В среднем на 50 карманных фонариков приходится два неисправных. найдите вероятность купить работающий фонарик. ответ = 0.96 (нужно решение)

Answer 1

50-2=48 - работающих из 50 всего
Купили работающий фонарик - А
Вероятность купить его тогда:
Р(А)=48/50=0,96

Answer 2

Calculating the Probability of Buying a Working Flashlight

To calculate the probability of buying a working flashlight out of 50 pocket flashlights, given that two of them are defective, we can use the concept of probability.

Let's denote the event of buying a working flashlight as A and the event of buying a defective flashlight as B. We want to find the probability of event A occurring.

The probability of event A can be calculated using the formula:

P(A) = 1 - P(B)

Since we know that two out of the 50 flashlights are defective, we can calculate the probability of event B occurring as:

P(B) = 2/50 = 0.04

Therefore, the probability of event A occurring, which is the probability of buying a working flashlight, can be calculated as:

P(A) = 1 - 0.04 = 0.96

So, the probability of buying a working flashlight is 0.96.

Please note that the above calculation assumes that the probability of each flashlight being defective is the same and that the flashlights are independent of each other.

Answer 3

Probability of Buying a Working Flashlight

To find the probability of buying a working flashlight, we can use the concept of complementary events. If the probability of a flashlight being non-working is 2/50, then the probability of it being working is the complement of this, which is 1 - (2/50) = 48/50 = 0.96.

Probability of buying a working flashlight = 0.96

This means that there is a 96% chance of buying a working flashlight.

I hope this helps! If you have any other questions, feel free to ask.