4/17/23, 9:00 PM M5: Exam - Requires Respondus LockDown Browser + Webcam: Introduction to Statistics-2021- Frey
M5: Exam - Requires Respondus LockDown Browser
+ Webcam
Due No due date Points 50 Questions 4 Time Limit 90 Minutes
Requires Respondus LockDown Browser
Instructions
You may only have the following items when taking an exam: computer, 1-2 pieces of blank
scratch paper, a pen/pencil, and a calculator.
You may ONLY use the equation sheets that are provided WITHIN the exam. The use of printed
versions will be considered a violation of the Academic Integrity Policy.
Attempt History
Attempt Time Score
LATEST Attempt 1 20 minutes 50 out of 50
Score for this quiz: 50 out of 50
Submitted Apr 13 at 11:46pm
This attempt took 20 minutes.
Question 1 pts
You may find the following files helpful throughout the exam:
Statistics_Equation_Sheet
(https://previous.nursingabc.com/upload/images/Help_file_picture/Statistics_
Standard Normal Table
(https://previous.nursingabc.com/upload/images/Help_file_picture/standardn
Suppose that you take a sample of size 26 from a population that is not
normally distributed. Can the sampling distribution of x̄ be approximated
by a normal probability distribution?
https://portagelearning.instructure.com/courses/946/quizzes/24503?module_item_id=90912 1/5
, 4/17/23, 9:00 PM M5: Exam - Requires Respondus LockDown Browser + Webcam: Introduction to Statistics-2021- Frey
Your Answer:
For a population that is not normally distributed, the sample size would
have to be greater than 30. Since 26 is not greater than 30, and the
population is not normally distributed, then no, the sample distribution
cannot be approximated by a normal probability distribution.
No. The population is not normally distributed, therefore, we
need a sample size of at least 30 to approximate by a normal
probability distribution.
Question 2 pts
You may find the following files helpful throughout the exam:
Statistics_Equation_Sheet
(https://previous.nursingabc.com/upload/images/Help_file_picture/Statistics_
Standard Normal Table
(https://previous.nursingabc.com/upload/images/Help_file_picture/standardn
Suppose that you are attempting to estimate the annual income of 2000
families. In order to use the infinite standard deviation formula, what
sample size, n, should you use?
Your Answer:
n would have to be less than 100 to use the infinite standard deviation
https://portagelearning.instructure.com/courses/946/quizzes/24503?module_item_id=90912 2/5
M5: Exam - Requires Respondus LockDown Browser
+ Webcam
Due No due date Points 50 Questions 4 Time Limit 90 Minutes
Requires Respondus LockDown Browser
Instructions
You may only have the following items when taking an exam: computer, 1-2 pieces of blank
scratch paper, a pen/pencil, and a calculator.
You may ONLY use the equation sheets that are provided WITHIN the exam. The use of printed
versions will be considered a violation of the Academic Integrity Policy.
Attempt History
Attempt Time Score
LATEST Attempt 1 20 minutes 50 out of 50
Score for this quiz: 50 out of 50
Submitted Apr 13 at 11:46pm
This attempt took 20 minutes.
Question 1 pts
You may find the following files helpful throughout the exam:
Statistics_Equation_Sheet
(https://previous.nursingabc.com/upload/images/Help_file_picture/Statistics_
Standard Normal Table
(https://previous.nursingabc.com/upload/images/Help_file_picture/standardn
Suppose that you take a sample of size 26 from a population that is not
normally distributed. Can the sampling distribution of x̄ be approximated
by a normal probability distribution?
https://portagelearning.instructure.com/courses/946/quizzes/24503?module_item_id=90912 1/5
, 4/17/23, 9:00 PM M5: Exam - Requires Respondus LockDown Browser + Webcam: Introduction to Statistics-2021- Frey
Your Answer:
For a population that is not normally distributed, the sample size would
have to be greater than 30. Since 26 is not greater than 30, and the
population is not normally distributed, then no, the sample distribution
cannot be approximated by a normal probability distribution.
No. The population is not normally distributed, therefore, we
need a sample size of at least 30 to approximate by a normal
probability distribution.
Question 2 pts
You may find the following files helpful throughout the exam:
Statistics_Equation_Sheet
(https://previous.nursingabc.com/upload/images/Help_file_picture/Statistics_
Standard Normal Table
(https://previous.nursingabc.com/upload/images/Help_file_picture/standardn
Suppose that you are attempting to estimate the annual income of 2000
families. In order to use the infinite standard deviation formula, what
sample size, n, should you use?
Your Answer:
n would have to be less than 100 to use the infinite standard deviation
https://portagelearning.instructure.com/courses/946/quizzes/24503?module_item_id=90912 2/5
