CPM EDUCATIONAL PRUbh SELECTED HINTS, ANSWERS, AND ETOOLS T3 > Chapter 5 > Lesson 5.1.3 > Problem 5-49 5-49. David and Regina are competitive racers, and they both aim to break two minutes in their respective races. They are trying to figure out who has the more difficult challenge, since they compete in different sports. David runs the 800-meter race and Regina swims the 200- meter freestyle. They agree to accept the following standards for high school boys and girls: boys' 800-meter mean time is 149 seconds with a standard deviation of 13.6 seconds, girls' 200-meter freestyle mean time is 145 seconds with a standard deviation of 8.2 seconds. Currently, David's best time is 2:02 minutes and Regina's best time is 2: 10 minutes. Assuming times in their respective events are normally distributed, what is the percentile in which David and Regina each fall? Which athlete is relatively faster in his or her sport? SOHint: © 2019 CPM Educational Program. All rights reserved.

im not sure where the answers are and this questions has 3 answers not two

I need to place this in a box method

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ASK YOUR TEACHER   It's true — sand dunes in Colorado rival sand dunes of the Great Sahara Desert! The highest dunes at Great Sand Dunes National Monument can exceed the highest dunes in the Great Sahara, extending over 700 feet in height. However, like all sand dunes, they tend to move around in the wind. This can cause a bit of trouble for temporary structures located near the "escaping" dunes. Roads, parking lots, campgrounds, small buildings, trees, and other vegetation are destroyed when a sand dune moves in and takes over. Such dunes are called "escape dunes" in the sense that they move out of the main body of sand dunes and, by the force of nature (prevailing winds), take over whatever space they choose to occupy. In most cases, dune movement does not occur quickly. An escape dune can take years to relocate itself. Just how fast does an escape dune move? Let x be a random variable representing movement (in feet per year) of such sand dunes (measured from the crest of the…

Please make sure you answer all of it it is all one question

I already have a,b,c could you help me find d,e,f,g?

please help thank you