Project #18670 - Statistics

 

1. A bird feeder is placed at each of six different heights. It is recorded which feeder was selected by each of 20 cardinals. Using the Kolmogorov-Smirnov procedure for discrete data, test the null hypothesis that each feeder height is equally desirable to cardinals.

Feeder height

Number observed

1 (lowest)

2

2

2

3

4

4

5

5

5

6 (highest)

2

 

 

 

2. The following data, collected by a Texas County Medical examiner over the past 15 years, concerns automobile fatalities and seat belts in male drivers. Is survival contingent (or dependent) upon wearing seat belts?

 

a) Please use chi-square analysis. Please state the null and alternate hypotheses, α - level, critical value and please conclude each analysis with a concise, inclusive summary statement.

 

 

Wearing a seat belt

 

Yes

No

Total

Dead

Alive

Totals

6

46

 

43

88

 

 

Ho: 

Ha:

 

α = ____,      the critical value X20.05 = ____        

 

 

 

b) Please provide R code and R output for this test

 

c)Please use G test to test the same hypothesis in a).

 

d) If your X2 is significant, please use the contingency coefficient to measure the degree of the intensity between these two nominal variables.

 

 

3. Is smoking contingent upon formal educational level?  Use both Chi-square and loglikelihood (G) contingency analysis to test these data. 

a) Please state the null and alternate hypotheses, α - level, Degree of Freedom, critical value 

 

b) Please use chi-square test (formula and table) and please conclude analysis with a concise, inclusive summary statement.  

 

c) Please use G test with formula and table . Is William’s correction necessary?

 

No H.S. degree

H.S. degree

College degree

Totals

Smokes

Does not smoke

41

43

28

51

9

72

 

Total

 

 

 

 

 

 

 

Ho: 

 

Ha:

α = ____,      X2___, ____, = ____      

 

 

 

b) If significant, please compute any measure of the degree of the intensity relating these two nominal variables.

 

 

 

 

 

Subject Mathematics
Due By (Pacific Time) 12/04/2013 11:00 pm
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