(2) Let A be the 3 x 2 matrix with the following label male female Freshmen 512 376 410 Sophomore Junior 495 486 428 a. Suppose 2% of the male students and 1% of the female students tested positive for covid. So there are 14 students from each class tested positive. Use matrix multiplication to compute this answer. b. If 1% of freshmen, 2% of sophomore and 3% of junior tested posi- tive, use matrix multiplication to find the number of male and female students tested positive.
(2) Let A be the 3 x 2 matrix with the following label male female Freshmen 512 376 410 Sophomore Junior 495 486 428 a. Suppose 2% of the male students and 1% of the female students tested positive for covid. So there are 14 students from each class tested positive. Use matrix multiplication to compute this answer. b. If 1% of freshmen, 2% of sophomore and 3% of junior tested posi- tive, use matrix multiplication to find the number of male and female students tested positive.
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Transcribed Image Text:(2) Let A be the 3 x 2 matrix with the following label
male
female
Freshmen
512
376
Sophomore
495
410
Junior
486
428
a. Suppose 2% of the male students and 1% of the female students tested
positive for covid. So there are 14 students from each class tested
positive. Use matrix multiplication to compute this answer.
b. If 1% of freshmen, 2% of sophomore and 3% of junior tested posi-
tive, use matrix multiplication to find the number of male and female
students tested positive.
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