Richard had a 550-piece puzzle with an image of a crossword puzzle. He took out a handful of the pieces to examine, and found the following number of letters on the pieces.
1, 4, 6, 6, 1, 4, 4, 6, 6, 1
Assuming that the sample was representative of the puzzle, what was the mean number of letters on a piece of the puzzle?

Triangle knm is what is true about the sides of knm

Ur environment is very sensitive to the amount of ozone in the upper atmosphere. the level of ozone normally found is 4.04.0 parts/million (ppm). a researcher believes that the current ozone level is not at a normal level. the mean of 2525 samples is 4.44.4 ppm with a standard deviation of 0.80.8. assume the population is normally distributed. a level of significance of 0.020.02 will be used. make the decision to reject or fail to reject the null hypothesis. answer tables

Side xy of triangle xyz is extended to point w, creating a linear pair with ∠wyz and ∠xyz. measure of an exterior angle what is the value of x? 64 80 100 180