Biostat

 

Homework 5

PUBH 6000

Due 11/4/2017

 

1. Determine if there is a significant difference between the genders on average student height and report the 95% confidence interval.

 

F

 

Fp

 

Fconclusion

 

hypotheses

 

α

 

TS

 

p

 

conclusion

 

lower limit

 

upper limit

 

 

 

 

 

 

2. Determine if there is a significant difference between the number of hours students study and the number of hours students work and report the 95% confidence interval.

 

hypotheses

 

α

 

TS

 

p

 

conclusion

 

lower limit

 

upper limit

 

 

 

3. Determine if there is a significant difference between males and females in regard to the average number of hours they watch TV and report the 95% confidence interval.

 

F

 

Fp

 

Fconclusion

 

hypotheses

 

α

 

TS

 

p

 

conclusion

 

lower limit

 

upper limit

 

 

 

4. The average faculty salaries data file includes the average salaries for males ($1000/year) and for females ($1000/year) from assistant professors from the same university (i.e., these are dependent samples). Determine if there is a difference in the average faculty salaries between males and females and report the 95% confidence interval.

 

hypotheses

 

α

 

TS

 

p

 

conclusion

 

lower limit

 

upper limit

 

 

 

5. The ozone column thickness data file includes the thickness for January and February for 15 different years (i.e., these are dependent samples). Determine if three is a difference in the ozone column thickness between January and February and report the 95% confidence interval.

 

hypotheses

 

α

 

TS

 

p

 

conclusion

 

lower limit

 

upper limit