Last rating period, the percentages of viewers watching several channels between

Question

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:

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

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

Each expected value is         

(b) Test to 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.)

(Click to select)Do not rejectReject H0. Conclude viewing shares of the current rating period (Click to select)differdo not differ from those of the last.

WDUX
(News) WWTY
(News) WACO
(Cheers Reruns) WTJW
(News) Others 15% 24% 22% 18% 21%

Explanation / Answer

a)

Each expected value is 5

b)

since p-value < 0.10 (alpha), i reject ho and conclude that view shares of current period differ from those of the last period.

oi pi ei = pi*n (oi-ei)^2/ei 182 15% 300 46.41 536 19% 380 64.04 354 22% 440 16.81 151 16% 320 89.25 777 28% 560 84.09 sum 2000 300.605 chi sq 8.0217E-64 p-value

Related Questions

Navigate

• Browse (All)
• Browse L
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.