MATH 136 Module 8 Problem Set-(SNHU)

4/25/2021 Southern New Hampshire University - 8-2 Problem Set: Module Eight




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MAT-136-H7409 21EW4 Intro to Quantitative Analysis, 8-2 Problem Set: Module Eight
Briana Tattersall, 4/24/21 at 8:59:51 PM EDT




Question1: Score 3/3
Studies are often done by pharmaceutical companies to determine the effectiveness
of a treatment program. Suppose that a new AIDS antibody drug is currently under
study. It is given to patients once the AIDS symptoms have revealed themselves. Of
interest is the average (mean) length of time in months patients live once they start
the treatment. Two researchers each follow a different set of 40 patients with AIDS
from the start of treatment until their deaths. The following data (in months) are
collected.

Researcher A:

; ; ; ; ; ; 22; 44; 37; 16; 14; 24; 25; 15; 26; 27; 33; 29;
3 4 11 15 16 17 35 ; 44 ; 13 ; ;
21

22; 10; 12; 8; 40; 32; 26; 27; 31; 34; 29; 17; 8; 24; 47; 47; 33; 34


Researcher B:

3 ; ;
14; 5; 16; 17; 28; 41; 31; 18; 14; 14; 26; 25; 21; 22; 31; 2; 35;
11 ;
44 ;
23 ;
21

21; 16; 12; 18; 41; 22; 16; 25; 33; 34; 29; 13; 18; 24; 23; 42; 33; 29




Determine what the key terms refer to in the example for Researcher A.


Your response Correct response
54213 54213
Auto graded Grade: 1/1.0 




 Total grade: 1.0×1/1 = 100%
Feedback:

The population is all AIDS patients.

The sample is the set of 40 patients with AIDS in the study.

The parameter is the average length of time (in months) AIDS patients live after
treatment.


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,4/25/2021 Southern New Hampshire University - 8-2 Problem Set: Module Eight



The statistic is the average length of time (in months) AIDS patients live after
treatment in the sample.

The variable is the length of time an AIDS patient lives after treatment. Let X = the
length of time (in months) AIDS patients live after treatment.




Question2: Score 3/3

Determine what the key terms refer to in the following study. A fitness center is
interested in the mean amount of time a client exercises in the center each week.


Your response Correct response
453162 453162
Auto graded Grade: 1/1.0 




 Total grade: 1.0×1/1 = 100%
Feedback:

The population is all clients at the fitness center.

The sample is a group of clients at the fitness center.

The parameter is the mean amount of time clients spend exercising in the fitness
center each week.

The statistic is the mean amount of time clients spend exercising in the fitness center
each week in the sample.

The variable X = the amount of time one client spends exercising in the fitness
center each week.

The data are the amount of time spent exercising by clients in the fitness center each
week. Examples of the data are 1, 2, and 3 hours.




Question3: Score 2/2



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, 4/25/2021 Southern New Hampshire University - 8-2 Problem Set: Module Eight



a. Identify the type of data that would be used to describe a favorite baseball
team.



Your response Correct response
Qualitative

Qualitative
Feedback:
Correct.
Auto graded Grade: 1/1.0 


What is an example of the data?


Your response Correct response
the Oakland A's

the Oakland A's
Feedback:
Correct.
Auto graded Grade: 1/1.0 


 Total grade: 1.0×1/2 + 1.0×1/2 = 50% + 50%
Feedback:
a. Baseball teams are qualitative (categorical) data.


b. An example of the data is the Oakland A's.




Question4: Score 1/2

Student grades on a chemistry exam were:

; ; ; ;
77 78 74 81 89 50 79 82 84 91 ; ; ; ; ;

a. Select the stem-and-leaf plot of the data.


Your response Correct response




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