Statistics- A researcher investigates whether classical music is more

A researcher investigates whether classical music is more or less soothing to air-traffic controllers than modern music. She plays a classical selection for one group and a modern selection for another. She gives each person an irritability questionnaire and obtains the following:

Classical: n = 6, x bar = 14.69, s squared subscript x = 8.4

Modern n = 6, x bar = 17.20, s squared subscript x = 11.6

a) Subtracting C - M what are Ho and Ha?

b) What is t obt

c) With alpha .05, are the results significant?

d) What should she conclude about the relationship in nature between type of music and irritability?

e) What are statistics should be computed?

f) Compute the 95% confidence interval