A neuropsychologist wants to determine if people who have a dominant right cerebral hemisphere differ from people with a dominant left cerebral hemisphere in their choice of either music or reading as a preferred activity. He surveyed 127 subjects with the following results.
Dominant left Hemisphere right
Music 48 18
Reading 35 26
a.What is the value of c2obt?
b.What is the value of c2crit for a = 0.05?
c.What do you conclude?
d.What type error might one be making?