MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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I need some step by step instructions regarding how to obtain the answers. I see some steps online but still puzzles me how they got the answers. If someone can assist it would be grateful

 

The number of ants per acre in the forest is normally distributed with mean 42,000 and standard deviation 12,175. Let X = number of ants in a randomly selected acre of the forest. Round all answers to 4 decimal places where possible.

a. What is the distribution of X? X ~ N(,)

b. Find the probability that a randomly selected acre in the forest has fewer than 42,395 ants. 

c. Find the probability that a randomly selected acre has between 31,036 and 37,829 ants. 

d. Find the first quartile.  ants (round your answer to a whole number)

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