Study sheet for exam #2

1. Be able to interpret a probability distribution (e.g., the X axis corresponds to values of the variable;
Y axis corresponds to how likely each value is).

2. Relate the concept of alpha level to a probability distribution (i.e., know that alpha corresponds
to a specific part of the distribution defined as relatively unlikely).

3. Calculate the percentage of cases above and/or below a particular Z score in a normal distribution.

4. Calculate the percentage of cases above and/or below a particular raw score in a normal distribution.

5. Calculate a particular Z score in a normal distribution given the percentage of cases above and/or below it.

6. Calculate a particular raw score in a normal distribution given the percentage of cases above and/or below it.

7. Translate a hypothesis into H₀, H₁, m₁, and m ₂.

8. Completely understand the difference between a one and two tailed test.

9. Complete all steps in the hypothesis testing if N = 1.

A. Translate the hypothesis into H₀, H₁, m₁, and m ₂.

B. Determine the comparison distribution.

C. Determine Z_critical based on the alpha level and number of tails.

D. Calculate a Z score.

E. Explain your conclusion.

10. Complete all steps in the hypothesis testing if N > 1.

A. Translate the hypothesis into H₀, H₁, m₁, and m₂.

B. Determine the comparison distribution.

a. Calculate m_m and s_m.

b. understand the relationship between the magnitude of N and the variance of a distribution of means.

C. Determine Z_critical based on the alpha level and number of tails.

D. Calculate a Z score.

E. Explain your conclusion.