To test whether or not music helps thinking, 62 people were randomly assigned to groups to listen to rap music and to classical music and then to take an IQ test. Here are the results.
Rap Mean=106 N=25
Mozart Mean= 110 N=20
A.) The mean for IQ is 100; Standard deviation is 16. What test would you use to test whether rap mustic has an impact on thinking? Explain.
B.) What is the null hypothesis?
C.) Test whether or not either leads to above-average IQ results. What are the null hypotheses and p-values?
D.) What do these results mean? Explain.