In a test of differences between proportions, two samples are taken. In the first sample, a sample size of 100 shows 25 successes. In the second sample, a sample size of 80 shows 25 successes. What would be the value of B in this case?

A) $$\frac{{30}}{{100}} + \frac{{25}}{{80}}$$ B) $$\frac{{30}}{{100}} \times \frac{{25}}{{80}}$$ C) $$\frac{{30 + 25}}{{100}}$$ D) $$\frac{{30}}{{100}} + \frac{{25}}{{180}}$$

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Correct Answer: Option C

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In a test of differences between proportions two samples are taken...

In a test of differences between proportions, two samples are taken. In the first sample, a sample size of 100 shows 25 successes. In the second sample, a sample size of 80 shows 25 successes. What would be the value of B in this case?

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