A Random Sample of Size 15 Is Selected from a Normal

question 58

Multiple Choice

A random sample of size 15 is selected from a normal population. The population standard deviation is unknown. Assume the null hypothesis indicates a two-tailed test and the researcher decided to use the 0.10 significance level. For what values of t will the null hypothesis not be rejected?

• A)To the left of −1.282 or to the right of 1.282
• B)To the left of −1.345 or to the right of 1.345
• C)Between −1.761 and 1.761
• D)To the left of −1.645 or to the right of 1.645

Identify factors influencing the choice of research design in developmental psychology studies.

Understand the concept and application of factorial designs in experimental research.

Identify the main effect and interaction effects in factorial designs.

Differentiate between different types of experimental designs, including independent groups, repeated measures, and mixed factorial designs.