YMR0070, YMR3720 Tõenäosusteooria ja matemaatiline statistika
YMR0070, YMR3720 Tõenäosusteooria ja matemaatiline statistika
YMR0070, YMR3720 Tõenäosusteooria ja matemaatiline statistika
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20<br />
7.12. 0,14.<br />
7.13. 0,525.<br />
7.14. 0,4.<br />
7.15. 0,2.<br />
7.16.<br />
9<br />
14<br />
7.17. 0,813.<br />
7.18. 0,659.<br />
7.19. 0,173.<br />
≈ 0, 643.<br />
7.20. 3, 0,222.<br />
7.21. 0,178.<br />
7.22.<br />
x k 1 2 3 4 5<br />
p k 0,2 0,2 0,2 0,2 0,2 ,<br />
EX = 3, DX = 2, σ = √ 2 ≈ 1, 4, P (X ≤ 3) = 0, 6,<br />
F (x) = 0, 2 · 1(x − 1) + 0, 2 · 1(x − 2) + 0, 2 · 1(x − 3)+<br />
+0, 2 · 1(x − 4) + 0, 2 · 1(x − 5) =<br />
⎧<br />
0, x ≤ 1,<br />
0, 2, 1 < x ≤ 2,<br />
5∑<br />
⎪⎨<br />
0, 4, 2 < x ≤ 3,<br />
= 0, 2 · 1(x − k) =<br />
0, 6, 3 < x ≤ 4,<br />
k=1<br />
0, 8, 4 < x ≤ 5,<br />
⎪⎩<br />
1, x > 5,
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