stats project (6) x-box vs. ps3
DESCRIPTION
A solid project by Matt and Ryan. Well done, gentlemen.TRANSCRIPT
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