Complete a write-up answering the questions about the one sample T-test. What is the mean age and standard deviation of our sample? Is the difference between our sample mean and the population mean statistically significant? What is the p-value? What is the effect size? One Sample T-Test One Sample T-Test t df p Cohen's d SE Cohen's d age 32.502 3892 < .001 0.521 0.017 Note. For the Student t-test, the alternative hypothesis specifies that the mean is different from 39. Note. Student's t-test. Descriptives Descriptives N Mean SD SE Coefficient of variation age 3893 48.245 17.747 0.284 0.368