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...

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 | Design 2 |Design 3
     54      |    38        |    28
a. Do the results indicate any significant preferences
among the three designs?
b. Compute Cohen’s w to measure the size of the effect.