Manuel is investigating how long his phone's battery lasts (in hours) for various brightness levels (on a scale of 0-100). His data is displayed in the table and graph below. Brightness Level (x) Hours (y) 24 33 41 46 53 82 94 98 3.6 3.9 4.8 3.1 4.2 2.4 2.3 0.8 71 5- 10 20 30 40 50 60 70 80 90 100 11 Brightness Level What is the residual for the point (41,4.8)? Round to 3 decimal places. hours Question Help: D Video D Post to forum

Can a low barometer reading be used to predict maximum wind speed of an approaching tropical cyclone? For a random sample of tropical cyclones, let x be the lowest pressure (in millibars) as a cyclone approaches, and let y be the maximum wind speed (in miles per hour) of the cyclone. x 1004 975 992 935 989 928 y 40 100 65 145 80 147   (a) Make a scatter diagram of the data and visualize the line you think best fits the data.   (b) Would you say the correlation is low, moderate, or strong? low moderate     strong   Would you say the correlation is positive or negative? positive negative       (c) Use a calculator to verify that          x = 5823,          x2 = 5,656,235,          y = 577,          y2 = 64,859  and          xy = 553,251   Compute r. (Round your answer to four decimal places.)     As x increases, does the value of r imply that y should tend to increase or decrease? Explain your answer. Given our value of r, y…

Consider the variation of temperature with altitude depicted in the graph below.   What is the “y-intercept”?

bike increases its speed by five meters per second every 10 seconds. Which graph shows this relationship? 501 45 50 45 40 35 30 25 35 A. B. 010 20 30 4050 Time (sec) 10 20 30 4050 Time (sec) 50 10 35 30 D. C. 10 20 30 40 50 Time (sec) 10 20 30 40 50 Time (sec) Snonon onon o n44332211 Speed (m/sec) Speed (m/sec) nttmm2211