Chapter 1.6, Problem 23E

Find the intensities of earthquakes whose magnitudes are aR=6.0andbR=7.9.

In Figure 208, gear A is turning at 120 revolutions per minute and gear B is turning at 3.6 revolutions per second. Determine the ratio of the speed of gear A to the speed of gear B.

The population P (in millions) of Texas from 2001 through 2014 can be approximated by the model P=20.913e0.0184t, where t represents the year, with t=1 corresponding to 2001. According to this model, when will the population reach 32 million?

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Calculate Harmonic from the following statistical data : Wages: 10 12 14 16 18 No. of workers: 2 5 8 3 2.

Prices of diamonds are determined by what is known as the 4 Cs: cut, clarity, color, and carat weight. The prices of diamonds go up as the carat weight increases, but the increase is not smooth. For example, the difference between the size of a 0.99-carat diamond and a 1-carat diamond is undetectable to the naked human eye, but the price of a 1-carat diamond tends to be much higher than the price of a 0.99 diamond. In this question, we use two random samples of diamonds, 0.99 carats and 1 carat, each sample of size 23, and compare the average prices of the diamonds. In order to be able to compare equivalent units, we first divide the price for each diamond by 100 times its weight in carats. That is, for a 0.99-carat diamond, we divide the price by 99. For a 1 carat diamond, we divide the price by 100. The distributions and some sample statistics are shown below I have attached the questions and the chart in the images section. Thank you

Is the magnitude of an earthquake related to the depth below the surface at which the quake occurs? Let x be the magnitude of an earthquake (on the Richter scale), and let y be the depth (in kilometers) of the quake below the surface at the epicenter. x 3.2 4.0 3.3 4.5 2.6 3.2 3.4 y 5.2 10.3 11.2 10.0 7.9 3.9 5.5 Use a calculator to verify that Σx = 24.2, Σx2 = 85.94, Σy = 54.0, Σy2 = 466.44 and Σxy = 191.52. Compute r. (Round your answer to four decimal places.)

1 Given below are the figures of production of a factory: Year: 1992 1993 1994 1995 1996 1997 Production ('000 tones): 80 90 92 83 94 99 Draw suitable diagram.

Is the magnitude of an earthquake related to the depth below the surface at which the quake occurs? Let x be the magnitude of an earthquake (on the Richter scale), and let y be the depth (in kilometers) of the quake below the surface at the epicenter. 2.6 3.7 3.3 4.5 2.6 3.2 3.4 4.6 10.3 11.2 10.0 7.9 3.9 5.5 (a) Make a scatter diagram of the data.