**Control Group Post-Test Only
Design**

**Control Group Post-Test Only
Design**

**Control Group Post-Test Only
Design**

**Control Group Post-Test Only
Design**

**Demonstration Control Group
Post-Test Only Design**

**Demonstration Control Group
Post-Test Only Design**

**Demonstration Control Group
Post-Test Only Design**

**Demonstration Control Group
Post-Test Only Design**

**Schooler, Et Al. Null
Hypothesis**

**Schooler, Et. Al. Alternate Hypothesis**

**Statistical Decision and
Reality**

**Statistical Decision and
Reality**

**Statistical Decision and
Reality**

**Statistical Decision and
Reality**

**Statistical Decision and
Reality**

_{The Normal Distribution
for Sample Means}

**When to use Independent
t-test**

**4. Substitute parts into formula**

**Using the significance level
method**

**Statistical Decision and
Reality**

**Statistical Decision and
Reality**

**Statistical Decision and
Reality**