Which set of data would probably show astrong positive linear correlation?O a)the number of defective lightbulbs produced and the time ofthe day when they weremanufacturedmarks on a history test and theheights of the studentsthe colour of cars sold and theannual income of the car buyersthe height of corn in a field andthe amount of precipitation duringthe growing seasonO b)OcO d)

Answered: O d) the height of corn in a field and…

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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4 /12 100% 17. You are getting the perimeter, the distance around the shape, but all the lines/sides do not have a number, so you have to use the segment addition postulate to figure out the missing pieces before you add all the sides up to get the perimeter. In the figure shown below, each pair of intersecting line segments meets at a right angle, and all the lengths are given in inches. What is the perimeter, in inches, of the figure? 14 4 A. 30 В. 36 С. 42 D. 52 E. 62
A student releases a ball on a ramp, letting it roll down the ramp. Using a meter stick, she measureshow far it rolls in half of a second. She then repeats this process, increasing the time she allows the ball to rollwith each trial. The data is given below:Time (s) Distance (cm)0.0 00.5 51.0 251.5 552.0 1002.5 1553.0 2253.5 3054.0 4004.5 5055.0 6251. What is the independent variable for the experiment?2. What is the dependent variable for the experiment?
The owner of a moving company typically has his most experienced manager predict the total number of labor hours that will be required to complete an upcoming move. In an effort to provide a more accurate method, the owner has decided to use the number of cubic feet moved as the independent variable and has collected data for 20 moves in which the travel time was an insignificant portion of the hours worked. Use the data provided to complete parts (a) through (d) below. E Click the icon to view the data table. .... a. Construct a scatter plot. Choose the correct graph below. Data table O A. OB. С. Cubic Feet Moved Labor Hours 60- 900- 60- 616 31.50 719 33.75 263 13.75 455 20.50 0- 900 Cubic Feet 60 900 Cubic Feet 551 29.25 Hours 712 34.75 b. Assuming a linear relationship, use the least-squares method to determine the regression coefficients b, and b,. 412 18.75 296 14.50 bo = 384 21.00 b, = 451 22.50 603 26.75 (Round to three decimal places as needed.) 442 21.75 651 31.00 336 16.25…
18. Ms. Dunn's class wants to estimate the number of blades of grass in a lawn that is shaped roughly like a 30-foot-by-40-foot rectangle. The children cut 1-inch-by-1-inch squares out of sheets of paper and place these square holes over patches of grass. Each child cuts the grass from their 1-square-inch patch and counts the number of blades of grass they cut. Inside, the class calculates the average number of blades of grass they cut. This average is 37. Using these data, determine approximately how many blades of grass are in the lawn. Explain your reasoning. 22
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Number of Number of hours, x bacteria, y 1 164 280 3 466 4 778 1306 1929 4893
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Find the z-scores for which 90% of the distribution area lies between -z and z. a) (-1.645, 1.645) b) (-.99, 0.99) Oc) (-1.96, 1.96) d) (-2.33, 2.33)
6. Setup: JP was curious about the sodium content of organic cornflakes. To investigate this, twenty 300-gram boxes of organic cornflakes were obtained and the sodium content was measured. The data (in milligrams) are as follows: 131.1, 130.7, 130.9, 129.5, 129.6, 128.8, 130.7, 128.3, 128.2, 129.7, 130.1, 129.3, 128.7, 129.0, 129.4, 130.4, 129.5, 130.1, 129.8, 130.0 Task: Perform a hypothesis test using R to determine if you can support a claim that the mean sodium content of this brand of cornflakes differs from 130 milligrams? Use a = 0.08 to make your decision. R Output: Upon running your analysis in R, you obtain the following results: One Sample t-test data: corn = 0.1121 t = -1.6659, df = alternative hypothesis: true mean is not equal to 130 19, р-value 92 percent confidence interval: 129.3458 130.0342 sample estimates: mean of x 129.69 Questions: (a) State the hypotheses used in performing this test. (b) Using the output above, state the decision (Reject or Not Reject Ho) of the…

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O d) the height of corn in a field and the amount of precipitation during the growing season