TABLE 9-7 A Major Home Improvement Store Conducted Its Biggest Brand Recognition

question 21

Essay

TABLE 9-7
A major home improvement store conducted its biggest brand recognition campaign in the company's history. A series of new television advertisements featuring well-known entertainers and sports figures was launched. A key metric for the success of television advertisements is the proportion of viewers who "like the ads a lot." A study of 1,189 adults who viewed the ads reported that 230 indicated that they "like the ads a lot." The percentage of a typical television advertisement receiving the "like the ads a lot" score is believed to be 22%. Company officials wanted to know if there is evidence that the series of television advertisements are less successful than the typical ad (i.e. if there is evidence that the population proportion of "like the ads a lot" for the company's ads is less than 0.22) at a 0.01 level of significance.
-Referring to Table 9-7, the largest level of significance at which the null hypothesis will not be rejected is ________.

---

Definitions:

Antibodies

Proteins produced by the immune system to neutralize or destroy foreign substances like bacteria and viruses.

Immune Function

The activities performed by the immune system to protect the body against disease-causing organisms and substances.

Antigens

Substances that the immune system recognizes as foreign or dangerous, eliciting an immune response, often found on pathogens or produced by them.

Leukocytes

White blood cells, part of the immune system, involved in protecting the body against both infectious disease and foreign invaders.