The average score of 200 students in a mathematics test is 75 with a standard deviation of 4. Then the number of students who scored less than 80 is 1. О 31 2. O 21 3. О 169 4. O 179

MATLAB: An Introduction with Applications
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The average score of 200 students in a mathematics test is 75 with a standard deviation of 4. Then the number of students who scored less than 80 is
1. О 31
2. O 21
3. О 169
4. O 179
Transcribed Image Text:The average score of 200 students in a mathematics test is 75 with a standard deviation of 4. Then the number of students who scored less than 80 is 1. О 31 2. O 21 3. О 169 4. O 179
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