Question: 1.What are the two formulas for the standard error, S M in a T test? 2.If a variance is 100, what is the SD? (this
1.What are the two formulas for the standard error, SM in a T test?
2.If a variance is 100, what is the SD? (this question is as simple as it appears?)
3.If a SD is 30, what is the variance? (this question is as simple as it appears)
4.A sample of n = 25 scores has a mean of M = 50 and a variance of s2 = 36. What is the estimated standard error for the sample mean (consider the information here carefully, what about it is important and what is not)?
5.A sample of n = 49 scores has a mean of M = 32 and a SM of 5. What is the variance of this sample? (this is an algebra problem!)
6.What is the standard deviation for problem #5?
7.What happens to the standard error when you decrease the variance?
8.In the one sample T test, what happens to the DF when you decrease the sample size?
9.If I go from 15 DF to 20 DF what happens to the critical value of T and why (2 points)
10.What is the formula for the one sample T test?
11.If the alpha for a hypothesis test is .05, and the P value you get for your sample T is .08, can you reject the null or not? And why?
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