Suppose a politician sent out 5100 surveys. Which of these numbers of surveys being returned would prevent nonresponse bias?
A. 51
B. 510
C. 5
D. 5100

Alex is the head photographer for the yearbook and the newspaper. she has a large staff of assistant photographers because they need to take pictures at all of the school events. she knows that some of her photographers have better cameras and can take action shots at sporting events, and that some of them are good at taking candid pictures in the hallways. she sets firm deadlines so she has enough time to look through all of the shots and choose the best ones. she gives her photographers constructive feedback to them improve their pictures. respectful enforcer warlord doormat peacemaker

Blank is the amount of energy in a sound wave per unit of time and is also related to the loudness of a sound

Compare the advantages and disadvantages of using cash instead of a credit card to obtain good services