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Here are the best resources to pass MATH 221 (MATH221). Find MATH 221 (MATH221) study guides, notes, assignments, and much more.
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Math 221 Week 2 Homework Answer key Updated Spring 2023.
Exam (elaborations) • 11
pages
• 2023
Question 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
Math 221 Week 2 Homework Answer key Updated Spring 2023.
Last document update:
ago
Question 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
Question 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 in...
DeVry University, Naperville Math 221 Week 2 Homework...Quiz (answered correctly)
Last document update:
ago
Question 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 in...
Question 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:

Manufactured probability

Classical probability

Subjective probability

Empirical probability

Question 2

2 / 2 pts

Given the following information, find the probability that a randomly selected student will

be very short. Number of students who are very short: 45, short: 60, tall: 82, very tall: 21

21.0%

39.4%

21.6%

28.8%

IncorrectQuestion 3

0 / 2 pts...
Math 221 Week 2 Homework Quiz (answered correctly)Spring 2023.
Last document update:
ago
Question 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:

Manufactured probability

Classical probability

Subjective probability

Empirical probability

Question 2

2 / 2 pts

Given the following information, find the probability that a randomly selected student will

be very short. Number of students who are very short: 45, short: 60, tall: 82, very tall: 21

21.0%

39.4%

21.6%

28.8%

IncorrectQuestion 3

0 / 2 pts...
Week 2 Lab Instructions-BEGIN

 Data have already been formatted and entered into an Excel worksheet.

 Obtain the Lab data file (Excel) for this lab from your instructor.

 Use the Week 1 spreadsheet (available from Week 1: Resources) for graphs and

calculations. You will need to copy data from the Lab data file into the Week 1

calculations spreadsheet to answer some of these Lab questions.

 The names of each variable from the survey are in the first row of the Lab data

Workshee...
ATH221_W2_Lab_Excel_Adrian Arneson/MATH221 Statistics for Decision Making Week 2 Lab
Last document update:
ago
Week 2 Lab Instructions-BEGIN

 Data have already been formatted and entered into an Excel worksheet.

 Obtain the Lab data file (Excel) for this lab from your instructor.

 Use the Week 1 spreadsheet (available from Week 1: Resources) for graphs and

calculations. You will need to copy data from the Lab data file into the Week 1

calculations spreadsheet to answer some of these Lab questions.

 The names of each variable from the survey are in the first row of the Lab data

Workshee...
Question 1

2 / 2 pts

From a random sample of 58 businesses, it is found that the mean time

the owner spends on administrative issues each week is 20.53 with a

standard deviation of 3.54. What is the 95% confidence interval for

the amount of time spent on administrative issues?

 (19.24, 24.14)

 (16.99, 24.07)

 (13.45, 27.61)

X (19.62, 21.44)

Question 2

2 / 2 pts

If a confidence interval is given from 43.85 up to 61.95 and the mean

is known to be 52.90, what is the maximum error?

 X9...
MATH 221 Week 5 Homework well explained 2023 latest
Last document update:
ago
Question 1

2 / 2 pts

From a random sample of 58 businesses, it is found that the mean time

the owner spends on administrative issues each week is 20.53 with a

standard deviation of 3.54. What is the 95% confidence interval for

the amount of time spent on administrative issues?

 (19.24, 24.14)

 (16.99, 24.07)

 (13.45, 27.61)

X (19.62, 21.44)

Question 2

2 / 2 pts

If a confidence interval is given from 43.85 up to 61.95 and the mean

is known to be 52.90, what is the maximum error?

 X9...
Question 1

0 / 2 pts

(CO 1) A survey of 385 people who like wild sweaters found that 74% had a wild holiday

sweater. What is the population and what is the sample?

Population: people who like wild sweaters: Sample: the 385 people who had a wild

holiday sweater

Population: people who like sweaters; Sample: the 74% that had a wild holiday sweater

Population: people who like wild sweaters; Sample: the 385 people who like wild

sweaters

Population: people who like wild sweaters; Sample: the ...
DeVry University, Naperville MATH 221 Week 3 Quiz (answered correctly)
Last document update:
ago
Question 1

0 / 2 pts

(CO 1) A survey of 385 people who like wild sweaters found that 74% had a wild holiday

sweater. What is the population and what is the sample?

Population: people who like wild sweaters: Sample: the 385 people who had a wild

holiday sweater

Population: people who like sweaters; Sample: the 74% that had a wild holiday sweater

Population: people who like wild sweaters; Sample: the 385 people who like wild

sweaters

Population: people who like wild sweaters; Sample: the ...
MATH 221 FINAL EXAM REVIEW(Version 2) QUESTIONS WITH ANSWERS: DEVRY UNIVERSITY
Exam (elaborations) • 8
pages
• 2022
Jack weighs 160 pounds and his sister weighs 110 pounds. If the mean weight for

men his age is 175 with a standard deviation of 14 pounds and the mean weight for

women is 145 with a standard deviation of 10 pounds, determine whose weight is closer

to "average." Write your answer in terms of zscores and areas under the normal curve.

for Jack z = 1.07

14

15

14

160 175

≈ −

−

=

−

=

−

σ

x µ

, when z = 1.07, area = .1423

for his sister 2.50

10

25

10

110 14...
MATH 221 FINAL EXAM REVIEW(Version 2) QUESTIONS WITH ANSWERS: DEVRY UNIVERSITY
Last document update:
ago
Jack weighs 160 pounds and his sister weighs 110 pounds. If the mean weight for

men his age is 175 with a standard deviation of 14 pounds and the mean weight for

women is 145 with a standard deviation of 10 pounds, determine whose weight is closer

to "average." Write your answer in terms of zscores and areas under the normal curve.

for Jack z = 1.07

14

15

14

160 175

≈ −

−

=

−

=

−

σ

x µ

, when z = 1.07, area = .1423

for his sister 2.50

10

25

10

110 14...
MATH 221 Quiz Week 7 : DeVry University, New York - Worth 60 Points.
Exam (elaborations) • 19
pages
• 2022
WEEK 7: QUIZ

Points 60 Questions 30

Time Limit 120Minutes

Instructions

Here is some information about your quiz or exam.

This quiz covers Weeks 5 and 6, Chapters 6 and 7, and Course Objectives (COs) 6

and 7.

This quiz has 30 multiple choice questions worth 2 points each for a total value of 60

points.

You have 120 minutes to finish this quiz.

When the time limit is reached you will be exited from the exam.

Attempt History

Attempt Time Score

LATEST Attempt 1 84 minutes 30 out of 60

...
MATH 221 Quiz Week 7 : DeVry University, New York - Worth 60 Points.
Last document update:
ago
WEEK 7: QUIZ

Points 60 Questions 30

Time Limit 120Minutes

Instructions

Here is some information about your quiz or exam.

This quiz covers Weeks 5 and 6, Chapters 6 and 7, and Course Objectives (COs) 6

and 7.

This quiz has 30 multiple choice questions worth 2 points each for a total value of 60

points.

You have 120 minutes to finish this quiz.

When the time limit is reached you will be exited from the exam.

Attempt History

Attempt Time Score

LATEST Attempt 1 84 minutes 30 out of 60

...
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