Traditional Culture Encyclopedia - Weather inquiry - The accuracy of a weather forecast at a weather station is 0.7, and the probability of accuracy is 8 times out of (1) 10. (2) The probability of accuracy is at least 8 times in 10 (result
The accuracy of a weather forecast at a weather station is 0.7, and the probability of accuracy is 8 times out of (1) 10. (2) The probability of accuracy is at least 8 times in 10 (result
The event with probability p is repeated n times, and the probability of appearing k times is p (k) = c (n, k) * (p k) * (( 1-p) (n-k)).
The probability that 1) 10 has 8 times is p (8) = c (10,8) * (0.78) * (0.32) = 0.23.
2) The accurate probability of at least 8 of10 predictions is P=P(8)+P(9)+P( 10)=0.38.
- Previous article:Weather forecast in Hamilton, Australia
- Next article:30 papers on environmental enlightenment, 1000 words.
- Related articles
- Too high tire pressure is easy to puncture, so the weather is hot in summer.
- Chongqing 3-7 days ~ ~ self-help tour ~ ~ where to go is more fun and economical.
- 20 16 weather in Zhuzhou 10 # 9. 10 # ll.
- When is the best time to travel to New Zealand?
- Yucheng belongs to which city?
- The main scenic spots in ingeborg
- What should I do if my legs and feet are swollen on a hot day?
- How long will propylene pigment last? What can propylene paint do in 20 minutes?
- Yichun weather forecast
- I want to know exactly the weather tomorrow morning.