t-Test - Is there a difference in how many times males and females think about death in a given month?  Here are 15 subjects, 6 males and 9 females.  Given are the number of times they think about death in a given month.  Calculate the value for t and the degrees of freedom.  Decide if there is a significant difference for males and females.  Note:  Use as many decimal places as your calculator will allow.  x- x bar won't add to zero for females because of the number of the decimals.  Use 5 decimal places to get very close to zero.
males females
3 3
2 3
30 7
10 12
0 3
0 0
  5
  2
  0
Answer

 

t-Test - Is there a difference in how many vitamin supplements males and females take?  Here are 16 subjects, 7 males and 9 females.  Given are the number of supplements they take.  Calculate the value for t and the degrees of freedom.  Decide if there is a significant difference for males and females.  Note:  Use two decimal places. 
males females
0 5
7 0
0 5
4 0
0 7
0 7
0 7
  7
  7
Answer

 

Calculate the correlation for the number of vitamin supplements taken by age to examine if there is a relationships between the two variables.  There are 16 subjects.
X - Age Y - Vitamin Supplements
61 0
55 5
52 0
50 7
52 5
49 0
50 4
47 0
55 0
43 7
55 7
61 7
38 0
58 7
62 0
57 7
Answer

 

Calculate the correlation for agreement to two statements: How likely do you feel your genetic history caused the development of your particular cancer (1=not likely and 4=very likely).  How much do you agree with the theory that a healthy diet may prevent cancer or cancer reoccurrence (1=strongly disagree and 4=strongly agree).  There are 16 subjects.
X  - Genetic History Y - Healthy Diet
3 3
4 4
4 1
3 3
2 3
1 2
3 3
1 2
1 3
4 4
2 3
1 2
3 3
1 4
1 2
1 3
Answer

 

Calculate the correlation for agreement to the statement How much do you agree with the theory that a healthy diet may prevent cancer or cancer reoccurrence (1=strongly disagree and 4=strongly agree) and number of vitamin supplements taken.  There are 16 subjects.
X  - Vitamin Supplements Y - Healthy Diet
5 3
0 4
0 1
7 3
5 3
0 2
4 3
0 2
0 3
7 4
7 3
7 2
0 3
7 4
0 2
7 3
Answer

 

Answer the questions below based on this crosstabulation (crosstab)
   

How much do you agree that nutrition causes cancer?
    Strongly Agree Agree Disagree Strongly Disagree Total
Sex Male 1 3 3 0  
  Female 2 5 1 1  
  Total         16
Of males, what percent strongly agree? Answer
Of males, what percent agree? Answer
Of males, what percent disagree? Answer
Of males, what percent strongly disagree? Answer
Of females, what percent strongly agree? Answer
Of females, what percent agree? Answer
Of females, what percent disagree? Answer
Of females, what percent strongly disagree? Answer
Of those who strongly agree, what percent are male? Answer
Of those who agree, what percent are male? Answer
Of those who disagree, what percent are male? Answer
Of those who strongly disagree, what percent are male? Answer
Of those who strongly agree, what percent are female? Answer
Of those who agree, what percent are female? Answer
Of those who disagree, what percent are female? Answer
Of those who strongly disagree, what percent are female? Answer

 

Answer the questions below based on this crosstabulation (crosstab)
   

How much do you agree that your physician should respect your end of life decisions?
    Catholic Protestant Jehovah's Witness Other Total
Sex Agree or Strongly Agree 4 2 0 3  
  Disagree or Strongly Disagree 3 0 3 0  
  Total         15
Of those who agreed or strongly agreed what percent are:  
     Catholic? Answer
     Protestant? Answer
     Jehovah's Witness? Answer
     Other? Answer
Of those who disagreed or strongly disagreed what percent are: Answer
     Catholic? Answer
     Protestant? Answer
     Jehovah's Witness? Answer
     Other? Answer

 

 

Calculate a Chi Square to see if the distribution of Ethnicity by Sex is due to chance or if there is a real relationship between them in this sample of 16 respondents.
Sex Ethnicity
female white
male white
female asian
male white
female black
female white
male hispanic
male white
female white
female hispanic
male white
female white
male white
female black
female white
male white
Answer  

 

Calculate a Chi Square to see if the distribution of Religion by Sex is due to chance or if there is a real relationship between them in this sample of 15 respondents.
Sex Religion
female catholic
male catholic
female jehovah witness
female jewish
female protestant
male catholic
female catholic
female protestant
male jehovah witness
male catholic
male jewish
female catholic
female jewish
male catholic
female jehovah witness
Answer