A research team is hired to investigate the prevalence of periodontal disease in a rural county with a low average socio-economic status. The team is given the task of surveying the area, and
providing a brief examination of participants to correctly identify cases of periodontal disease
and estimate an overall prevalence. If the team identifies an overall prevalence of above 25%, the
sponsoring organization is to initiate an active campaign promoting healthy dental practice. Out
of 2,879 participants surveyed, 589 were identified to have periodontal disease.
A) Conduct a formal test for detecting if the prevalence of periodontal disease in the sample is
significantly different from the minimum prevalence for intervention. Use an alpha level of 0.01.
B) Interpret your conclusions.

Which of the following quartic functions has x = –1 and x = –2 as its only two real zeroes?

Questions 9-10. use the table of educational expenditures to answer the questions. k-12 education expenditures population indiana $9.97 billion 6.6 million illinois $28.54 billion 12.9 million kentucky $6.58 billion 4.4 million michigan $16.85 billion 9.9 million ohio $20.23 billion 11.6million 9. if the amount of k-12 education expenses in indiana were proportional to those in ohio, what would have been the expected value of k-12 expenditures in indiana? (give the answer in billions rounded to the nearest hundredth) 10. use the value of k-12 education expenditures in michigan as a proportion of the population in michigan to estimate what the value of k-12 education expenses would be in illinois. a) find the expected value of k-12 expenditures in illinois if illinois were proportional to michigan. (give the answer in billions rounded to the nearest hundredth) b) how does this compare to the actual value for k-12 expenditures in illinois? (lower, higher, same? )

Jorge wants to determine the enlarged dimensions of a digital photo to be used as wallpaper on his computer screen. the original photo was 800 pixels wide by 600 pixels high. the new photo will be 1,260 pixels wide. what will the new height be?