FORESTRY
AGRICULTURAL STATISTICS AND ECONOMICS
Question
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When we test np and n(1p) to ensure they are both greater than or equal to 10, what are we trying to determine?

The standard deviation


The test statistic


If any bias is present


If the data is normal

Explanation:
Detailed explanation1: You can test the equality of two proportions obtained from independent samples using the Pearson chisquare test.
Detailed explanation2: If the population variance (2 ) is unknown and the sample is large (n≥30 n ≥ 30 ) then we use a ztest. In the test statistic, we replace the population variance 2 with s2 .
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