You intend to estimate a population mean with a confidence interval. You believe the population to have a normal distribution. Your sample size is 60. Find the critical value that corresponds to a confidence level of 90%.

Which statements regarding the diagram are true? check all that apply.

Find all solutions for 2y - 4x =2 y = 2x + 1 site: socratic. org

In each of the cases that follow, the magnitude of a vector is given along with the counterclockwise angle it makes with the +x axis. use trigonometry to find the x and y components of the vector. also, sketch each vector approximately to scale to see if your calculated answers seem reasonable. (a) 50.0 n at 60.0°, (b) 75 m/ s at 5π/ 6 rad, (c) 254 lb at 325°, (d) 69 km at 1.1π rad.