Statistics math 221 - Study guides, Class notes & Summaries
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DeVry University, Naperville MATH 221 Week 3 HW Quiz (answered correctly)
- Exam (elaborations) • 11 pages • 2023
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uestion 1 
2 / 2 pts 
A student believes that there is a 90% probability of getting an A on the next test. This would be 
considered: 
Empirical probability 
Manufactured probability 
Subjective probability 
Classical probability 
Question 2 
2 / 2 pts 
Given the following information, find the probability that a randomly selected student will be 
tall, but not very tall. Number of students who are very short: 45, short: 60, tall: 82, very tall: 21 
50.5% 
39.4% 
10.1% 
49.5%
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Math 221 Week 2 Homework Quiz (answered correctly)Spring 2023.
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uestion 1 
2 / 2 pts 
The probability of drawing one card and getting queen is 4/52. This would be considered: 
Subjective probability 
Empirical probability 
Manufactured probability 
Classical probability 
IncorrectQuestion 2 
0 / 2 pts 
Given the following information, find the probability that a randomly selected student will be 
very tall. Number of students who are very short: 45, short: 60, tall: 82, very tall: 21 
21.0% 
10.1% 
21.6% 
49.5% 
Question 3 
2 / 2 pts 
Given the following inf...
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MATH-221 - Week 4- Homework
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MATH-221 - Week 4- Homework 
Book: Chan, C. et al. (2022). Statistics for Decision Making (3rd ed.). zyBooks, A Wiley Brand. 
Course: (MATH 221) Statistics for Decision-Making - 61204
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MATH-221 - Week 6- Quiz
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MATH-221 - Week 6- Quiz 
Book: Chan, C. et al. (2022). Statistics for Decision Making (3rd ed.). zyBooks, A Wiley Brand. 
Course: (MATH 221) Statistics for Decision Making - course code 61204
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MATH-221 - Week 1- Quiz
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MATH-221 - Week 1- Quiz 
Book: Chan, C. et al. (2022). Statistics for Decision Making (3rd ed.). zyBooks, A Wiley Brand. 
Course: (MATH 221) Statistics for Decision-Making - 61204
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Math 221 Week 1 Quiz Answers 2023
- Exam (elaborations) • 12 pages • 2023
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Question 1 
2 / 2 pts 
A recent survey of the alumni of a university indicated that the average salary of 10,000 
of its 200,000 graduates was $130,000. The $130,000 would be considered a: 
Population 
Parameter 
Sample 
Statistic 
IncorrectQuestion 2 
0 / 2 pts 
A recent survey of the alumni of a university indicated that the average salary of 10,000 
of its 200,000 graduates was $130,000. The 10,000 would be considered a: 
Population 
Parameter 
Sample 
Statistic 
Question 3 
2 / 2 pts 
Based ...
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MATH-221 - Week 4- Quiz
- Exam (elaborations) • 1 pages • 2024
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MATH-221 - Week 4- Quiz 
Book: Chan, C. et al. (2022). Statistics for Decision Making (3rd ed.). zyBooks, A Wiley Brand. 
Course: (MATH 221) Statistics for Decision-Making - 61204
-
MATH-221 - Week 3- Homework
- Exam (elaborations) • 1 pages • 2024
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MATH-221 - Week 3- Homework 
Book: Chan, C. et al. (2022). Statistics for Decision Making (3rd ed.). zyBooks, A Wiley Brand. 
Course: (MATH 221) Statistics for Decision-Making - 61204
-
MATH-221 - Week 5- Homework
- Exam (elaborations) • 1 pages • 2024
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- $7.99
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MATH-221 - Week 5- Homework 
Book: Chan, C. et al. (2022). Statistics for Decision Making (3rd ed.). zyBooks, A Wiley Brand. 
Course: (MATH 221) Statistics for Decision-Making - 61204
-
MATH-221 - Week 2- Quiz
- Exam (elaborations) • 1 pages • 2024
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- $7.99
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MATH-221 - Week 2- Quiz 
Book: Chan, C. et al. (2022). Statistics for Decision Making (3rd ed.). zyBooks, A Wiley Brand. 
Course: (MATH 221) Statistics for Decision-Making - 61204
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