Scenario 2: Does instructor attractiveness affect student learning? A study was conducted where 70 students were randomly assigned to listen to a lecture from an attractive instructor and got an average score of 18.27 on a 25-question quiz with a standard deviation of 4.70 while the 60 students randomly assigned to an unattractive instructor got an average score of 16.68 with a standard deviation of 4.66.

a. Explanatory and Response Variables. Identify each as either categorical or quantitative.

b.Parameter of interest and symbol

c.Hypotheses in symbols

d. State the observed statistic and assign a symbol

e. Calculate the standardized statistic

f. Based on the standardized statistic, we would ___________ the null hypothesis.Briefly explain your decision.

g. Write the conclusion in context.