Stats Project (6) X-Box vs. PS3

ByRyan Espinoza

Matt Pruett

Which gaming system is the preferred system for the general population: Xbox 360 or PS3?

Ho: There is no preference between the two systems

Ha: There is a preference between the two systems

?

Chi-square Goodness of Fit test

22 ( exp)

exp

obs

Random Independent Large Sample Size

Ask random members of the population n = 100

2 22 66 50 (34 50)

50 5010.24

.001P

p= .001 Reject Ho There is a preference between the two

systems

Convenience Sampling Biased

What features made the Xbox 360 more preferred?

If both systems were the same price, would the Xbox 360 still be preferred?

Make sampling more random

Observed Expected

Xbox 360 66 50

PS3 34 50