The standard deviation of the numbers 3, 8, 12, 17 and 25 is 7. 56 correct to 2 decimal places. What happens if each of the five numbers is increased by 2?.

Which source would provide the most bias-free information about smoking and increased health risks? a) a website created by heart disease patients b) a research study conducted by the mayo clinic eliminate c) a public service message sponsored by tobacco companies d) an online question forum conducted by attorneys for cardiac specialists