Aresearcher draws a population of 40 adults from a city and administers an iq test (which is known to have a population mean of 100 and population standard deviation of 15). his sample mean is 108. what is the 95 percent confidence interval for this result?

Secant ac and bd intersect at point e inside f what is the measure of aed if measurements cd equals 30 a b is 50 and cb is 170

Uestion 1(multiple choice worth 5 points) (05.02)alex wants to paint one side of his skateboard ramp with glow-in-the-dark paint, but he needs to know how much area he is painting. calculate the area of the isosceles trapezoid. isosceles trapezoid with top base 12 feet, bottom base of 18 feet, and height of 6 feet. 72 ft2 84 ft2 90 ft2 108 ft2

What is the name of a polygon that has four congruent sides and theses angle measures 60,120,60,120?