Question

Question 2: Last rating period, the percentages of viewers watching several channels between 11 p.m. and 11:30 p.m. in a major TV market were as follows:

WDUX (News)	WWTY (News)	WACO (Cheers Reruns)	WTJW (News)	Others
15%	19%	24%	19%	23%

Suppose that in the current rating period, a survey of 2,000 viewers gives the following frequencies:

WDUX (News)	WWTY (News)	WACO (Cheers Reruns)	WTJW (News)	Others
284	414	445	352	505

	% of Viewers of TV channels
	Channels	% of Viewers, Last Rating Period	Frequencies, Current Rating Period
	WDUX ( news)	15%	284
	WWTV (news)	19%	414
	WACO (Cheers Reruns)	24%	445
	WTJW (news)	19%	352
	Others	23%	505

(a) Show that it is appropriate to carry out a chi-square test using these data.

Each expected value is => _________

(b) Determine whether the viewing shares in the current rating period differ from those in the last rating period at the .10 level of significance. (Round your answer to 3 decimal places.)

X^2=_________

Answer 1