Apolymer is manufactured in a batch chemical process. viscosity measurements show that it is approximately normally distributed with a standard deviation of 20. a random sample of 42 batches has a mean viscosity of 759. construct a 99% confidence interval around the true population mean viscosity.

Every rhombus is a square. true false

43lbs of tomatos cost $387. how much would 41lbs cost

You are standing next to a really big circular lake. you want to measure the diameter of the lake, but you don't want to have to swim across with a measuring tape! you decide to walk around the perimeter of the lake and measure its circumference, and find that it's 400\pi\text{ m}400? m. what is the diameter dd of the lake?