15.) Christina is 4 feet tall and is standing in the shade under a tree such that the end of her shadow coincides with the end of a tree's shadow. Her
shadow is 3 feet long and the distance between her and the tree is 21 feet.
What is the height of the tree? *

Given the following sampling distribution of one mean with a sample size 49, from a normally distributed population,find the population standard deviation, o.79828588912497

Which describes the difference between the graph of f(x)=x^2 and g(x)=-(x^2-2)

One of every 20 customers reports poor customer service on your company’s customer satisfaction survey. you have just created a new process that should cut the number of poor customer service complaints in half. what percentage of customers would you expect to report poor service after this process is implemented? 1.) 5% 2.) 10% 3.) 2% 4.) 2.5%