中文辅助说明
你可以先复习原假设、备择假设、显著性水平和拒绝域，再用二项分布或泊松分布模拟单尾与双尾检验。工具会把概率、临界区域和最终结论联系起来，并配合概念测验，帮助你避免只会按计算器却不会写统计结论。
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IAL S2 Statistics
Notes
Null Hypothesis ()
The default position. Assumes no change or effect. Typically
contains the equals sign.
Alternative Hypothesis ()
Accepted if the null hypothesis is rejected. Shows that there
is a significant change.
Key Concept What is a p-value?
Probability of the observed result or something more extreme assuming the Null Hypothesis is true.
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