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Week 2: Exercises and Homework Problems 1. Of the adult U.S. population, 36% has an allergy. A sample of 1200 randomly selected adults resulted in 33.2% reporting an allergy. a. Describe the population. b. What is the sample? c. Describe the variable. d. Identify the statistic and give its value. e. Identify the parameter and give its value. 2. (HWK) A drug manufacturer is interested in the proportion of persons who have hypertension (elevated blood pressure) whose condition can be controlled by a new drug the company has developed. A study involving 5000 individuals with hypertension is conducted, and it is found that 80% of the individuals are able to…show more content…
b. What information is shown in the circle graph that cannot be shown in the bar graph? c. “Generally speaking, the bar graph is a better choice for use than the circle graph.” Justify this statement. |[pic] |[pic] | 12. How Americans prefer to eat an apple was reported in USA Today, November 11, 2004: Bite into it – 47%, Cut it into slices – 39%, Peel – 11%, Don’t Know – 3%. a. Construct a circle graph showing how Americans prefer to eat an apple. b. Construct a bar graph showing how Americans prefer to eat an apple. c. In your opinion, does the circle graph in part a or the bar graph in part b result in a better representation of the information? Explain. 13. (HWK) American Payroll Association got a big response to this question about company dress code: “The current dress code at my company is…” Final results: a. A little too relaxed – 27% b. A little too formal – 15% c. Just right – 58% Most people mentioned the importance of “comfort” in their explanations. The vas majority of respondents were very happy with their company dress code or policy. a. Construct a circle graph depicting this information.
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