Mpirical Evaluation in Software Engineering

Hi there,
I need HIGH QUALITY OF WRITING. Please for QUESTIONS numbers 2,3,4,5 and 7 I need accurate and more explanation. also dont make any Plagiarism.

There are 7 questions just answer those. No need for introduction, conclusion to the whole paper its not an essay. Just answer the questions separately.
Thank you!

Referencing Requirements:
I need refrencing from books and articals and websites.