The article "influence of penetration rate on penetrometer resistance" (j. oliveira, m. almeida, et al., journal of geotechnical and geoenvironmental engineering, 2011: 695â703) presents measures of navidi-3810214 book november 11, 2013 14: 8 446 chapter 6 hypothesis testing penetration resistance, expressed as a multiple of a standard quantity, for a certain fine-grained soil. fifteen measurements taken at a depth of 1 m had a mean of 2.31 with a standard deviation of 0.89. fifteen measurements taken at a depth of 2 m had a mean of 2.80 with a standard deviation of 1.10. can you conclude that the penetration resistance differs between the two depths?

Simplify 15(x - 4)(x -1)-3(x + 4)(x - 1) with steps

Find the domain of the following expression: 1/(√x)-2

For every corresponding pair of cross sections, the area of the cross section of a sphere with radius r is equal to the area of the cross section of a cylinder with radius and height 2r minus the volume of two cones, each with a radius and height of r. a cross section of the sphere is and a cross section of the cylinder minus the cones, taken parallel to the base of cylinder, is the volume of the cylinder with radius r and height 2r is and the volume of each cone with radius r and height r is 1/3 pie r^3. so the volume of the cylinder minus the two cones is therefore, the volume of the cylinder is 4/3pie r^3 by cavalieri's principle. (fill in options are: r/2- r- 2r- an annulus- a circle -1/3pier^3- 2/3pier^3- 4/3pier^3- 5/3pier^3- 2pier^3- 4pier^3)