In Exercises 49-52, use the bar graph, which shows the receipts of the federal government (in billions of dollars) for selected years from
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College Algebra Real Mathematics Real People Edition 7
- Heart Disease In a certain country, the number of deaths due to heart disease decreased from 235 in one year to 221 in the next year. What percentage decrease in deaths due to heart disease does this represent?arrow_forwardStock Market The week of September 15, 2008 was one of the most volatile weeks ever for the US stock market. The closing numbers of the Dow Jones Industrial Average each day were: What was the overall change for the week? Was it positive or negative?arrow_forwardIn Example 5, after how many days are 250 students infected?arrow_forward
- Which phase in a forensic investigation is likely to be most relevant to Excel? Data analysis Data entry Data preparation Data collectionarrow_forwardThe accompanying table displays information about the number of births (in thousands) and the number of deaths (in thousands) for certain years. Report the death rate as a percentage of the birth rate, and comment on its trend over time. What is causing the trend? LOADING... Click the icon to view the data table. Report each death rate as a percentage of the birth rate. Year Births (thousands) Deaths (thousands) Percentage of deaths per births 2006 4275 2445 nothing% 2007 4320 2408 nothing% 2008 4241 2465 nothing% 2009 4140 2436 nothing% 2010 4002 2455 nothing% (Round to one decimal place as needed.)arrow_forwardQuestion: A school organization would like to sell cupcakes for fund raising. Its members gathered data on the prices (in pesos) and quantities (in number of pieces) sold from previous fund raising activities. Predict the price for 2500 cupcakes. Prices and Quantities data given below. Please answer like the format example on the 2nd picture.arrow_forward
- The histogram below gives the length of service of members of the Department of English at a particular university. The classes, in years of service, are 0−−4.9, 5−−9.9, etc., and the vertical axis represents the number of faculty. What percent of the department faculty have 15 or more years of service?arrow_forwardThe following table shows the length, in centimeters, of the humerus and the total wingspan, in centimeters, of several pterosaurs, which are extinct flying reptiles.arrow_forwardFile Home Insert Draw Page Layout Despite the growth in digital entertainment, the nation's 400 amusement parks have managed to hold on to visitors. A manager collects data on the number of visitors (in millions) to amusement parks in the United States. A portion of the data is shown in the accompanying table. 10 v ... v X v fx B2 Year Visitors A B D 2000 312 1 Year Visitors 2001 315 2 2000 312 2007 345 3 2001 315 4 2002 364 SOURCE: International Association of Amusement Parks and Attractions. 5 2003 370 6. 2004 332 7 2005 314 picture Click here for the Excel Data File 8 2006 355 9 2007 345 b-1. Estimate a linear trend model and an exponential trend model for the sample. (Round your answers to 2 decimal places.) 10 11 12 Variable Linear Trend Exponential Trend 13 Intercept 14 15 Standard Error 16 17 18arrow_forward
- Researchers initiated a long-term study of the population of American black bears. One aspect of the study was to develop a model that could be used to predict a bear's weight (since it is not practical to weigh bears in the field). One variable thought to be related to weight is the length of the bear. The accompanying data represent the lengths and weights of 12 American black bears. Complete parts (a) through (d) below. Click the icon to view the data table. Click the icon to view the critical values table. ..... (a) Which variable is the explanatory variable based on the goals of the research? O A. The number of bears B. The weight of the bear O C. The length of the bear (b) Draw a scatter diagram of the data. Choose the correct graph below. O A. O B. O C. D. A Weight (kg) 180- AWeight (kg) 180- ALength (cm) 180- A Weight (kg) 180- 40- 100 40- 100 Length (cm) 40- 100 40- 100 200 200 200 200 Length (cm) Weight (kg) Length (cm) (c) Determine the linear correlation coefficient between…arrow_forwardThe bar graph shows that life expectancy, the number of years newborns are expected to live, in a particular region has increased dramatically since ancient times. Find the percent increase in average life expectancy of the region from the Stone Age to 2016. % (Round to the nearest integer as needed.) Average Life Expectancy (years) 30- 20- 10- 80- 70- 60- 50- 40- ཚོ☁༄༅༤ a 71 60 a 49 G 24 26 29 31 Age Greece Ages Stone Ancient Middle 1900 1950 Time Period/Year 1980 2016arrow_forwardSection 2.3 15. For each pair of values, use a percentage to express their relative change or difference. Use the second given value as the reference value, and express results to the nearest percentage point. The number of daily newspapers in the United states is now 1486, and it was 2226 in 1990. O 50% O -50% O 33% O -33%arrow_forward
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