M1 = 18.57, M2 = 18.33, SM1−M2 = 0.97, tcv = 1.997 Based on your answer, explain whether there is a significant difference between the two population means. What about your answer tells you whether there is a significant difference or not?
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Step 1
- Mean of population 1 (M1) = 18.57 - Mean of population 2 (M2) = 18.33 - Standardized mean difference (SM1−M2) = 0.97 (this is the calculated t-value) - Critical t-value (tcv) = 1.997 Show more…
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Using the results below: M1 = 18.57, M2 = 18.33, SM1-M2 = 0.97, tcv = 1.997 1. Calculate a 95% confidence interval estimating the true difference between the population means. Write the final answer in brackets [x.xx, x.xx]. 2. Based on your answer, explain whether there is a significant difference between the two population means. What about your answer tells you whether there is a significant difference or not?
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