when you are using a sample statistic to estimate a population characteristic, do you want the sampling variability of the sample statistic to be large or small? explain why

Shiny white dental insurance costs $258 per year. approximately one-third of insured people need a filling, which averages $110 each. 80% of insured people get a preventive check-up each year, and the average cost of this visit is $95. if you consider shiny white’s income and expenses, what is the expected value of each insured customer?

The vertices of a triangle are a(7,5), b(4,2), c(9,2). what is m

Which statement justifies why angle ebc measures 90?