Answered: One of the planets in the Andromeda…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question

One of the planets in the Andromeda galaxy, XNP29, has a surface temperature of 120◦K and is hotter than 33% of the planets in the galaxy. The surface temperatures of the planets in the galaxy follow a normal distribution with a standard deviation of 20◦K.
(a) Find the average surface temperature of the planets in the Andromeda galaxy.

(b) R2D2, a surface surveying robot that cannot operate at temperatures below 180◦K, can be sent for surface investigation to about how many of the 10 billion planets in the Andromeda galaxy?

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Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

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