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What is Comparing Two Population Samples in Statistics about?

Here are the key steps: 1) State the null and alternative hypotheses: H0: μ1 - μ2 = 0, Ha: μ1 - μ2 ≠ 0 2) Calculate the test statistic: z = (78.17 - 84) / √(91.17/71 + 97.64/32) = -2.05 3) The p-value is 0.04. Since this is less than 0.05, we reject the null hypothesis. Therefore, based on this sample, there appears to be a significant difference between the retention rates at private versus public colleges.

Author

Elena Writes

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EN