ผลต่างระหว่างรุ่นของ "Probstat/week8 practice 2"
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Jittat (คุย | มีส่วนร่วม) (หน้าที่ถูกสร้างด้วย ': ''This is part of probstat''. To compute the cdf of standard normal random variable, you can use a table from [http://en.wikiped...') |
Jittat (คุย | มีส่วนร่วม) |
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แถว 2: | แถว 2: | ||
To compute the cdf of standard normal random variable, you can use a table from [http://en.wikipedia.org/wiki/Standard_normal_table wikipedia]. | To compute the cdf of standard normal random variable, you can use a table from [http://en.wikipedia.org/wiki/Standard_normal_table wikipedia]. | ||
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+ | == Basic practice == | ||
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+ | Let '''Z''' be a standard normal random variable (whose mean is 0 and variance is 1). | ||
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+ | 1. Find '''P{ Z >= 0 }'''. | ||
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+ | 2. Find '''P{ Z >= 0.5 }'''. | ||
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+ | 3. Find '''P{ Z >= 1 }'''. | ||
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+ | 4. Approximate the minimum value '''a''' such that '''P{ Z >= a } <= 0.1'''. |
รุ่นแก้ไขเมื่อ 02:43, 9 ตุลาคม 2557
- This is part of probstat.
To compute the cdf of standard normal random variable, you can use a table from wikipedia.
Basic practice
Let Z be a standard normal random variable (whose mean is 0 and variance is 1).
1. Find P{ Z >= 0 }.
2. Find P{ Z >= 0.5 }.
3. Find P{ Z >= 1 }.
4. Approximate the minimum value a such that P{ Z >= a } <= 0.1.