In a recent poll, 200 people were asked if they liked skiing, and 19% said they did. based on this, construct a 99% confidence interval for the true population proportion of people who like skiing. as in the reading, in your calculations: a. -use z = 1.645 for a 90% confidence interval b. use z = 2 for a 95% confidence interval c. use z = 2.576 for a 99% confidence interval. give your answers as decimals, to 4 decimal places.

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)

Experimental versus theoretical probability. someone me

School x and school y play each other in a competition school x has eight morepoinys than school y. school x has three times as many points as school y. how many points does each school have