Question
Download Solution PDFमान लीजिए Z एक सोमवार को आपके द्वारा अध्ययन किए जाने वाले घंटों की संख्या को दर्शाता है। यह भी ज्ञात है कि
P(Z = z) = \(\rm \left\{\begin{matrix} 0.4 & if z = 0\\ kz & if z = 1 \: or \: 2\\ 0 & otherwise \end{matrix}\right. \)
जहां k नियतांक है।
इसकी क्या प्रायिकता है कि आप कम से कम दो घंटे अध्ययन करें?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFगणना:
Z का प्रायिकता बंटन है
Z | 0 | 1 | 2 | अन्यथा |
P(Z) | 0.4 | k | 2k | 0 |
0.4 + k + 2k = 1
3k = 1 - 0.4
k = 0.2
P(आप कम से कम दो घंटे पढ़ाई करते है)
P(Z ≥ 2) = P(2) + P(3) + P(4) + .....
= 2k
= 2 × 0.2
P(Z ≥ 2) = 0.4
Last updated on Jun 17, 2025
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