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Aquí están los mejores recursos para pasar STATISTICS Math 221. Encuentra STATISTICS Math 221 guías de estudio, notas, tareas, y mucho más.
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DeVry University, Keller Graduate School of Management_MATH 221Week 2 quiz (Latest 2022/2023)
Examen • 10
páginas
• 2023
Disponible en paquete
Question 1 2 / 2 pts (CO 2) A random number generator is used to select a number from 1 to 100. What is the probability of selecting an odd number? 0.077 0.050Correct! 0.500 0.250 Question 2 2 / 2 pts (CO 2) What is the sample space of rolling two four-sided die? 1, 2, 3, 4Correct! (1,2)(1,3)(1,4)(2,2)(2,3)(2,4)(3,4)(4,4) (1, 1, 2, 2, 3, 3, 4, 4) (1,1)(2,2)(3,3)(4,4) Question 3 0 / 2 pts (CO 2) Consider the table below Response (number of cats owned) Frequency None 659 One 329 Two 52 Three 13 Fo...
DeVry University, Keller Graduate School of Management_MATH 221Week 2 quiz (Latest 2022/2023)
Última actualización de este documento:
hace
Question 1 2 / 2 pts (CO 2) A random number generator is used to select a number from 1 to 100. What is the probability of selecting an odd number? 0.077 0.050Correct! 0.500 0.250 Question 2 2 / 2 pts (CO 2) What is the sample space of rolling two four-sided die? 1, 2, 3, 4Correct! (1,2)(1,3)(1,4)(2,2)(2,3)(2,4)(3,4)(4,4) (1, 1, 2, 2, 3, 3, 4, 4) (1,1)(2,2)(3,3)(4,4) Question 3 0 / 2 pts (CO 2) Consider the table below Response (number of cats owned) Frequency None 659 One 329 Two 52 Three 13 Fo...
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 ...
Math 221 Week 1 Quiz Answers 2023
Última actualización de este documento:
hace
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 ...
Math 221 Week 2 Homework Quiz (answered correctly)
Examen • 11
páginas
• 2023
Disponible en paquete
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 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%

IncorrectQuestion...
Math 221 Week 2 Homework Quiz (answered correctly)
Última actualización de este documento:
hace
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 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%

IncorrectQuestion...
DeVry University, Naperville MATH 221 Week 3 HW help questions and answers well elaborated
Examen • 7
páginas
• 2023
Disponible en paquete
Let x represent the number of pets in pet stores. This would be considered what type of

variable:

Discrete

Nonsensical

Lagging

Continuous

Flag this Question

Question 22 pts

Let x represent sheets of paper in a package. This would be considered what type of

variable:

Discrete

Continuous

Inferential

Distributed

Flag this Question

Question 32 pts

Consider the following table.

Age Group Frequency

18-29 9831

30-39 7845

40-49 6869

50-59 6323

60-69 5410

70 and over 5279

If you c...
DeVry University, Naperville MATH 221 Week 3 HW help questions and answers well elaborated
Última actualización de este documento:
hace
Let x represent the number of pets in pet stores. This would be considered what type of

variable:

Discrete

Nonsensical

Lagging

Continuous

Flag this Question

Question 22 pts

Let x represent sheets of paper in a package. This would be considered what type of

variable:

Discrete

Continuous

Inferential

Distributed

Flag this Question

Question 32 pts

Consider the following table.

Age Group Frequency

18-29 9831

30-39 7845

40-49 6869

50-59 6323

60-69 5410

70 and over 5279

If you c...
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DeVry University, Naperville MATH 221 quiz (Latest 2023)
Examen • 19
páginas
• 2023
Disponible en paquete
Question 1

2 / 2 pts

(CO 4) Consider the following table:

Age Group Frequency

18-29 983

30-39 784

40-49 686

50-59 632

60-69 541

70 and over 527

If you created the probability distribution for these data, what would be the probability of

30-39?

0.189

0.237

0.425

0.165

Question 2

2 / 2 pts

(CO 4) Consider the following table of hours worked by part-time employees. These

employees must work in 5 hour blocks.

Weekly hours worked Probability

5 0.06

15 0.61

20 0.18

25 0.15

Fin...
DeVry University, Naperville MATH 221 quiz (Latest 2023)
Última actualización de este documento:
hace
Question 1

2 / 2 pts

(CO 4) Consider the following table:

Age Group Frequency

18-29 983

30-39 784

40-49 686

50-59 632

60-69 541

70 and over 527

If you created the probability distribution for these data, what would be the probability of

30-39?

0.189

0.237

0.425

0.165

Question 2

2 / 2 pts

(CO 4) Consider the following table of hours worked by part-time employees. These

employees must work in 5 hour blocks.

Weekly hours worked Probability

5 0.06

15 0.61

20 0.18

25 0.15

Fin...
MATH221_W4_Lab_Excel_Adrian Arneson>MATH221 Statistics for Decision Making Week 4 Lab study guide Updated Spring 2023.
Otro • 6
páginas
• 2023
Disponible en paquete
Calculating Binomial Probabilities

NOTE: For question 1, you will be using the same data file your instructor gave you

for the Week 2 Lab.

1. Using the data file from your instructor (same one you used for the Week 2 Lab),

calculate descriptive statistics for the variable (Coin) where each of the thirty-five

students in the sample flipped a coin 10 times. Round your answers to three decimal

places and type the mean and the standard deviation in the grey area below.

Mean: 3.886

Standard d...
MATH221_W4_Lab_Excel_Adrian Arneson>MATH221 Statistics for Decision Making Week 4 Lab study guide Updated Spring 2023.
Última actualización de este documento:
hace
Calculating Binomial Probabilities

NOTE: For question 1, you will be using the same data file your instructor gave you

for the Week 2 Lab.

1. Using the data file from your instructor (same one you used for the Week 2 Lab),

calculate descriptive statistics for the variable (Coin) where each of the thirty-five

students in the sample flipped a coin 10 times. Round your answers to three decimal

places and type the mean and the standard deviation in the grey area below.

Mean: 3.886

Standard d...
Question 1

2 / 2 pts

Let x represent the height of first graders in a class. This would be considered what type

of variable:

Discrete

Continuous

Nonsensical

Lagging

Question 2

2 / 2 pts

Let x represent the height of corn in Oklahoma. This would be considered what type of

variable:

Continuous

Discrete

Inferential

Distributed

IncorrectQuestion 3

0 / 2 pts

Consider the following table.

Age Group Frequency

18-29 9831

30-39 7845

40-49 6869

50-59 6323

60-69 5410

70 and over 52...
DeVry University, Naperville MATH 221 Week 3 HW Quiz (answered correctly)
Última actualización de este documento:
hace
Question 1

2 / 2 pts

Let x represent the height of first graders in a class. This would be considered what type

of variable:

Discrete

Continuous

Nonsensical

Lagging

Question 2

2 / 2 pts

Let x represent the height of corn in Oklahoma. This would be considered what type of

variable:

Continuous

Discrete

Inferential

Distributed

IncorrectQuestion 3

0 / 2 pts

Consider the following table.

Age Group Frequency

18-29 9831

30-39 7845

40-49 6869

50-59 6323

60-69 5410

70 and over 52...
MATH221 Statistics for Decision Making Week 6 Lab quiz (Latest 2022/2023)
Examen • 4
páginas
• 2023
Disponible en paquete
Short Answer Writing Assignment

All answers should be complete sentences.

We need to find the confidence interval for the SLEEP variable. To do this, we need to

find the mean and standard deviation with the Week 1 spreadsheet. Then we can the

Week 5 spreadsheet to find the confidence interval.

First, find the mean and standard deviation by copying the SLEEP variable and pasting it

into the Week 1 spreadsheet. Write down the mean and the sample standard deviation as

well as the count. Open...
MATH221 Statistics for Decision Making Week 6 Lab quiz (Latest 2022/2023)
Última actualización de este documento:
hace
Short Answer Writing Assignment

All answers should be complete sentences.

We need to find the confidence interval for the SLEEP variable. To do this, we need to

find the mean and standard deviation with the Week 1 spreadsheet. Then we can the

Week 5 spreadsheet to find the confidence interval.

First, find the mean and standard deviation by copying the SLEEP variable and pasting it

into the Week 1 spreadsheet. Write down the mean and the sample standard deviation as

well as the count. Open...
DeVry University, Keller Graduate School of Management_MATH 221Week 7 quiz (Latest 2022/2023)
Examen • 18
páginas
• 2023
Disponible en paquete
Question 1

2 / 2 pts

(CO6) From a random sample of 55 businesses, it is found that the mean time that

employees spend on personal issues each week is 5.8 hours with a standard deviation

of 0.35 hours. What is the 95% confidence interval for the amount of time spent on

personal issues?

(5.74, 5.90)

(5.73, 5.87)

(5.72, 5.88)

Correct!

(5.71, 5.89)

Question 2

0 / 2 pts

(CO6) If a confidence interval is given from 8.54 to 10.21 and the mean is known to be

9.375, what is the maximum erro...
DeVry University, Keller Graduate School of Management_MATH 221Week 7 quiz (Latest 2022/2023)
Última actualización de este documento:
hace
Question 1

2 / 2 pts

(CO6) From a random sample of 55 businesses, it is found that the mean time that

employees spend on personal issues each week is 5.8 hours with a standard deviation

of 0.35 hours. What is the 95% confidence interval for the amount of time spent on

personal issues?

(5.74, 5.90)

(5.73, 5.87)

(5.72, 5.88)

Correct!

(5.71, 5.89)

Question 2

0 / 2 pts

(CO6) If a confidence interval is given from 8.54 to 10.21 and the mean is known to be

9.375, what is the maximum erro...
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