What is the range of this data 3.3, 4.5, 6.7, 1.5, 11.6, 4.5, 11.7, 8.5, 3.2, 6.7,7.9

Atemperature of 1.64◦f corresponds to answer in units of ◦c.

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?

Which strategy is used by public health to reduce the incidence of food poisoning?