In two or three sentences describe how open market

What is a market? a. a system that allows people or companies to buy and sell products and services b. the number of companies willing to manufacture a specific product c. the ability to buy production materials in large quantities and save on costs d. a product's ability to satisfy a consumer

Do you think it ethical and appropriate for marshall to have used himself as a test subject and swallowed a sample of helicobacter pylori? what precautions did he take? would you do it? why or why not?

Now, use your previously-computed value as an approximation for sigma, and compute how many ears of the experimental corn the researcher needs in the study. don't forget, the margin of error and confidence level have already been given to you in a previous problem.