Lesson Objectives. 1  List the main features of the seafloor: mid-ocean ridges, deep sea trenches, and abyssal plains. 2  Describe what seafloor magnetism tells scientists about the seafloor. 3  Describe the process of seafloor spreading.
Assignment Help. The average diameter of sand dollars on a certain island is 4.50 centimeters with a standard deviation of 1.00 centimeters. If 9 sand dollars are chosen at random for a collection, find the probability that the average diameter of those sand dollars is more than 4.13 centimeters.he average diameter of sand dollars on a certain island is 4.50 centimeters with a standard deviation of 1.00 centimeters.
Notes: Cards cut to A8 paper size can still sometimes be found. In Victorian times a Visiting Card would vary between 3 3/8  x 2 1/2  and 2 1/4  X 1 3/8 . The size and use of such cards was very dependent on Gender, Marital Status and other factors. The specification for International cards is ISO 7810 ID-1, this is the same dimensions as a standard credit card. Remember to bookmark this page -. Folio, Quarto and Octavio: These are paper size terms indicating half-size, quarter size and eighth size respectively.