Lab 1

Question 1

Null Hypothesis

Answer 1

relates to statement being tested.
Final conclusion always given in terms of null hypothesis
“reject H0 in favor of Ha” or “do not reject H0”
usually “- is no better or average”

Question 2

Alternative Hypothesis

Answer 2

Statement of what experiment is meant to establish.
“- better than on average”

Question 3

Scientific method

Answer 3

1. The observation and question
2. hypothesis
3. experimentation and data collection
4. results and data analysis
5. Conclusions

Question 4

Application of scientific method

Answer 4

The only difference between the use of this method in every-day life and in the laboratory is that scientists carefully document their work, from observation to hypothesis to experiment, and finally conclusions and peer review. In addition, unlike problem solving outside the lab, the scientific method in the lab includes controlled conditions and variables.

Question 5

1. Observation and Question

Answer 5

Beginning of scientific method, Observe phenomena and develop questions

Question 6

2. Hypothesis

Answer 6

Second step of scientific method, after developing questions create “uncertain explanation” for phenomena
Must be testable and falsifiable
Null and alternative
null tested against alternative

Question 7

3. experimentation and data collection

Answer 7

3rd step of scientific method, make observations and conduct experiments leading to conclusions

Question 8

4. results and data analysis

Answer 8

4th step of scientific method, determine what results from experiment mean

Question 9

5. conclusions

Answer 9

5th and final step of scientific method, explain results and conclusions. compare with other research, reject or accept null hypothesis