Catherine Chao,Director of Marketing Research,needs a Sample of Kansas City

question 58

Multiple Choice

Catherine Chao,Director of Marketing Research,needs a sample of Kansas City households to participate in the testing of a new toothpaste package. If 40% of the households in Kansas City prefer the new package,the probability that Catherine's random sample of 300 households will have a sample proportion greater than 0.45 is ___________.

• A) 0.9232
• B) 0.0768
• C) 0.4616
• D) 0.0384
• E) 0.8974

---

Definitions:

Researcher's Interpretations

The conclusions or explanations made by researchers based on their findings from studies, which are subject to academic scrutiny and debate.

Measurements

The process of obtaining quantitative data or the magnitude of something using standard units.

Experimental Groups

Groups in scientific research that receive the intervention or treatment being tested, as opposed to a control group which does not.

Control Groups

In experimental research, groups of participants who do not receive the experimental treatment, used as a benchmark to measure the effects of the treatment.