Use hypothesis testing to answer the research questions,
labeling each step and completing any post-tests.
Researchers look at the role of wall color on mood. They
believe the color of walls will make a difference in anxiety
scores. Help them figure out the answer to this question
along with the effect size and 95% confidence interval from their
data:
Blue walls group: mean 15.57, estimated variance 5.34,
n=14
Red walls group: mean 19.79, estimated variance 5.87,
n=14