Use the REGRESSION feature on a graphing calculator. The total cost of the Democratic and the Republican national conventions has increased 596% over the 20-year period between 1980 and 2004. The following table lists the total cost, in millions of dollars, for selected years. Year, x Cost, y 1980, x=0 1984, x=4 1988, x=8 1992, x = 12 1996, x= 16 2000, x=20 $ 23.1 31.8 44.4 58.8 90.6 160.8 OA. y= 22.2887-(1.0929)* y = 1.0929 (22.2887)* y= 22.2887x (1.0929)* OB. O C. OD. y 6.6643x+2.8857 ...

DVD Player sales The table shows the number of DVD play-ers sold in a small electronics store in the years 2003-2013. What was the average rate of change of sales between 2003 and 2013? Whatwas the average rate of change of sales between 2003 and 2004? What was the average rate of change of sales between 2004 and 2005? Between which two successive years did DVD player sales increase most quickly?

Page of 11 ZOOM + 5. The table shows how the cost of a carne asada taco at my favorite taco stand has increased as they have become more popular since their opening in 2013. Use the data to answer the questions below. Year, x 2013, 0 2014, 1 2015, 2 2016, 3 2017, 4 2018, 5 2019,6 Cost ($) 0.50 0.55 0.65 0.75 0.90 1.00 1.10 (a) What is the regression line given by your TI-84 for this data? Round values to 3 decimal places. (b) Using the regression equation above, predict the cost of a carne asada taco at my favorite taco stand in 2020. Show the work.

The creator of a new online multiplayer survival game has been tracking the monthly downloads of the game. The following table shows the monthly downloads (in thousands) for each month of the current and previous year. Click on the datafile logo to reference the data.   The datafile logo.   Month Downloads Month Downloads (previous year) (thousands) (current year) (thousands) February 33.0 January 31.0 March 34.0 February 32.0 April 34.0 March 33.0 May 31.0 April 34.0 June 32.0 May 33.0 July 33.0 June 32.0 August 35.0 July 35.0 September 36.0 August 33.0 October 37.0 September 33.0 November 34.0 October 31.0 December 35.0     a. Compute the mean, median, and mode for number of downloads in the previous year. Mean (to 3  decimals)   thousand Median (to 2 decimal)   thousand Mode (to 2 decimal)   thousand b. Compute the mean, median, and mode for number of downloads in the current year. Mean (to  3 decimals)   thousand Median (to 2…

Determine the two values of such that the middle 55% of the data lie between the two -values. Round the solutions to two decimal places, as -values are traditionally rounded. The middle 55% of the data lie between Incorrect and Incorrect . Hint: Due to symmetry, the two -values should be opposites. Also, enter the smaller -value in the first blank and the larger -value in the second blank.

The spreadsheet at MarathonWinningTimes.xlsx shows the history of the winning time in the Boston Marathon for men and women from 1966 (when women first ran) through 2013. What is the average rate at which the men’s finishing time changed from year to year?

Yes, because 0.089 = (0.3)(0.158)  No, because 0.089 ≠ (0.3)(0.158)  Yes, because 0.047 = (0.3)(0.158)  No, because 0.047 ≠ (0.3)(0.158)

The U.S. Geological Survey monitors and reports on​ earthquakes, providing daily​ real-time, worldwide earthquake lists. Some of the information for four of the 105 earthquakes of magnitude 1.5 or greater that occurred on May​ 10, 2013, is shown in the following table. Magnitude is given on the Richter scale and NST stands for the number of stations that reported the activity on the same earthquake. Complete parts​ (a) through​ (e) below.   Time Magnitude Depth​ (km) NST Region 00:03:16 1.7 75.9 29 Alaska 04:59:11 1.7 134.9 18 Alaska 08:27:04 2.8 64.0 21 Alaska 23:30:09 4.2 10.0 34 China   a. Identify the type of data provided by the information in the first column of the table. Also identify the variable under consideration.   Quantitative, Continuous, Qualitative, Quantitative, Discrete,   region where the earthquake occurred depth of the earthquake in kilometers number of stations reporting the earthquake…

The Forestry Club sells Christmas trees each year to raisemoney for club activities. The trees cost $10 to cut and aresold for $25. Unused trees are stripped of their limbs and soldas firewood for $1 apiece. Data on past sales appear below.How many trees should the forestry club cut this year?

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…