Chi-square test
Message posted by Pat (via 152.163.207.51) on July 11, 2001 at 9:25 AM (ET)

A researcher uses a chi-sqare test to investigate buying strategies among people purchasing DVD players. He wants to determine who buys the four different brands. The null hypothesis for this research would be:
a) in the population of DVD player buyers,one brand will be preferred over the other three brands.

b) that there are real differences in the population redarding CD player preferences.

c) that 1/4 of the sample will prefer each brand.

d) that 1/4 of the population will prefer each brand.

This is multiple choice question. Please help and pick correct answer. THANKS

READERS RESPOND:
(In chronological order. Most recent at the bottom.)

Re: Chi-square test
Message posted by JG (via 128.8.22.96) on July 11, 2001 at 5:48 PM (ET)

Re: Chi-square test
Message posted by SM (via 210.8.232.5) on July 25, 2001 at 9:55 PM (ET)

If the researcher polled/interviewed EVERYONE that purchased a DVD, then the Null Hyp. would be D. If he polled a sample, his Null would be C. with the hope that the sample represented the population. (It should, or else there's no real point in doing the study).

Re: Chi-square test
Message posted by Jack Tomsky (via 208.249.113.130) on July 26, 2001 at 6:18 PM (ET)