21. As sample size decreases, the standard error of the sample mean )_

20. 21. DETAILS As sample size decreases, the standard error of the sample mean x ... o also decreases o increases @ might increase, decrease, or stay constant o stays constant DETAILS Random samples, each with n = 16 scores, are selected from a normal population with = 80 and o = 10. Select all statements that are true. The standard deviation of scores is 2.5. The standard deviation of the distribution of sample means is 10. The standard error is 2.5 The standard deviation of the distribution of sample means is 2.5. The standard deviation of scores is 10. The standard error is 10. x MY NOTES MY NOTES