Define the concept of confidence interval and degree of freedom with the help of an example.

Inductive analysis

Test the difference in the attitude of male and female subjects using chi-square analysis towards eating junk food based on the distribution given here with (at 0.5 level of significance):

Define research. What do you understand by the terms -Level of Significance and Power? Discuss their relevance in sample size determination. 

Errors in statistical decisions

Explain briefly the significance of control, manipulation and observation in an experimental study

Briefly discuss the characteristics of a good questionnaire. What are the advantages and limitations of using a questionnaire in a research study?