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Is a one sample or two sample z test be used for testing Lumber prices being...

Is a one sample or two sample z test be used for testing Lumber prices being affected by GDP?

Math   Statistics-And-Probability   
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Answer #1

The z test for one or two sample proportions test can be used for testing Lumber prices affected by GDP.

The z statistic for one sample proportion test is

, where is the hypothesis proportion , is the proportion of the sample and is the sample size.

The z statistics for two sample proportions test is

, where and are sample proportions, and are the sample size and , where and are no. of sucesses of sample 1 and sample 2 .

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