8. A communications company has developed three new
designs for a cell phone. To evaluate consumer response, a sample
of 120 college students is selected and each student is given all
three phones to use for one week. At the end of the week, the
students must identify which of the three designs they prefer. The
distribution of preference is as follows:
Design 1 = 54 Design 2 = 38 Design 3 = 28
a. Do the results indicate any significant preferences among the
three designs?
b. Compute the phi-coefficient to measure the size of the
effect.
