- Arts & Culture 4430
- Books in Foreign Languages 124
- Business & Economics 4718
- Computers 2359
- Dictionaries & Encyclopedias 676
- Education & Science 82726
- Abstracts 1269
- Astrology 14
- Astronomy 13
- Biology 41
- Chemistry 3448
- Coursework 3789
- Culture 72
- Diplomas 2791
- Drawings 1673
- Ecology 31
- Economy 329
- English 1251
- Entomology 2
- Ethics, Aesthetics 28
- For Education Students 21154
- Foreign Languages 116
- Geography 20
- Geology 20
- History 232
- Maps & Atlases 42
- Mathematics 5927
- Musical Literature 5
- Pedagogics 222
- Philosophy 189
- Physics 15011
- Political Science 131
- Practical Work 85
- Psychology 493
- Religion 51
- Russian and culture of speech 103
- School Textbooks 68
- Sexology 67
- Sociology 53
- Summaries, Cribs 934
- Tests 21796
- Textbooks for Colleges and Universities 546
- Theses 187
- To Help Graduate Students 18
- To Help the Entrant 112
- Vetting 328
- Works 57
- Информатика 8

- Engineering 3230
- Esoteric 1163
- Fiction 3121
- For Children 387
- House, Family & Entertainment 2511
- Law 2880
- Medicine 1229
- Newspapers & Magazines 319
- Security 312
- Sport, Tourism 984
- Website Promotion 675

# Probability option 1 Deposit fine

Refunds: 0

Uploaded:

**16.07.2013**

Content: 30716213118027.docx (640,94 kB)

100 $ | the discount is | 10% |

50 $ | the discount is | 5% |

20 $ | the discount is | 2% |

# Seller

al_ac information about the seller and his itemsSeller will give you a gift certificate in the amount of **5** RUB

# Description

1. From the cutting of the alphabet laid out the word mathematics. Then, all the letters of the word are mixed and invest in a random order. What is the probability that the word will again MATHEMATICS

2. The two boxes are the same type capacitors. In the first box 20 of capacitors, including 2 faulty. In the second 10, 3 of them faulty. Randomly taken capacitor proved suitable. What is the probability that he was from the first box?

3. Eighteen teams participating in the tournament, divided by lot into two groups of nine teams each. Find the probability that all six leading teams will be distributed into three different groups.

4. Let X - normally distributed random variable with mean 410 and standard deviation 2. Find the probability that X takes a value between 407 and 415.

5. Of the two candidates A and B to an appropriate position, three members of the commission should select one. Everyone can specify either a worthy, or reject both. The applicant is selected when he was found worthy of at least two members of the commission. Find the probability that the recommended A.

# Additional information

6. On average, a fifth of the marketed cars incompleteness. Find the probability that among the ten cars are less than three incompleteness.

7. A random variable X is given the integral function:

Find the values \u200b\u200bof A and B

8. Two automatic machines produced identical products. Given the laws of distribution of the number of defective items produced during the shift on each of them: the first for the second

X:

Xi 0 1 2

Pi 0,1 0,6 0,3

Y:

Yi 0 2

Pi 0,5 0,5

Find the mathematical expectation of the sum of random variables.

9. The machine made some detail. It turns out that the length X is a random variable. When measured in the three cases, the length was equal to 20.1 cm, in the two cases - 19.8 cm, in one case, the length was equal to 20.5 cm, and in four cases - 19.9 cm. Find a lower limit of the probability that the length of the items will be enclosed between 19.7 and 20.3 cm.

10. Of the 10 variants of the control work, written on separate cards, randomly selected and distributed eight eight students, seated on the same row. Find the probability that the serial number will be allocated for this.

# Feedback

0Period | |||

1 month | 3 months | 12 months | |

0 | 0 | 0 | |

0 | 0 | 0 |

**5 RUB**