Chapter 9, Problem 71PS

IAB conducted a study of 821 U.S. adults to understand the behavioural shift of consumers’ TV viewing experience. The study found that 460 of U.S. adults own streaming enables TVs, including smart TVs and videos streaming devices.

The authors of the report imply that the survey proves that more than half of all U.S. adults own streaming enabled TVs, including smart TVs and video streaming device.

a. Use the five-step p-Value approach to hypothesis testing and a 0.05 level of significance to try to prove that more than half of all U.S. adults own streaming enabled Tvs, including smart Tvs and videos streaming devices.

b. Based on your result in (a), is the claim implied by the authors valid?

c. Suppose the study found that 428 of U.S. adults own streaming enabled TVs, including smart Tvs and videos streaming devices. Repeat parts (a) and (b).

d. Compare the result (b) and (c).