when doing the realibility analysis based on Cronbach's alpha , do we need to:

a) Put dependent as well as indipendent variables or only indipendent variables?

b) If the cronstruct is from one question do i need to mention all eg: if this is the main question ( scale is also given from 1-7)

If you were to establish your own business, to what degree would you be able to complete the following tasks effectively?

and these are the sub questions:

F1	Define your business idea and strategy of your company.
F2	Making your business plan (conduct market research, financial analysis, etc.)
F3	Complete the necessary and administrative and bureaucratic work to establish your own business
F4	Develop and maintain favorable relationships with potential investors and banks.
F5	Work productively under continuous stress, pressure and conflict.
F6	See new market opportunities for new products/services.
F7	Develop relationships with key people who are connected to capital sources.
F8	Tolerate unexpected changes in business.
F9	Identify potential sources of funding.
F10	Design products or services that solve current problems.
F11	Persist in the face of adversity.

Do i need to include all in the Cronbach's alpha from F1-F11 or can i choose like say F6, F9 and F11 gives Cronbach's alpha of .088