Samples of equal size have been selected from each of three populations, producing sample proportions of 0.5, 0.7, and 0.6.The pooled sample proportion would be 0.65.

Question

Quizplus · Accepted Answer

The pooled sample proportion is calculated by adding the number of successes across all samples and dividing by the total number of observations across all samples. Given the proportions alone without the sample sizes, we cannot determine the pooled proportion directly, but assuming equal sample sizes, the correct pooled proportion would be the average of the three proportions: (0.5 + 0.7 + 0.6) / 3 = 0.6, not 0.65.

Samples of Equal Size Have Been Selected from Each of Three