James mark mbilinyi a dissertation submitted in partial fulfilment of the requirements for the degree of masters in project management of the open univers

3.5.2 Sample Size

According to Krishnaswami and Ranganatham, (2007), a sample is an empirical field of study that requires collection of first-hand information or data pertaining to the unit of the study from the field. The total sample size was 150 persons. Due to the limited resources, researcher will interview 120 labours from field (construction project sites) and 5 people from other place such as OSHA office, 10 people from ministry of construction 5 peoples from CRB and the 10 other people surrounding the building industry who are directly or indirectly affected by the projects. Literary researcher chose both sex and tries to get the right information as much as it can.

Table 3.1 Shows the Sample Distribution in Construction Sites

S/N	Respondents from Construction sites	Frequencies (N)	Percentage (%)	Sampling design	Data collection tools
	Victoria	10	8.33	Simple random	Questionnaire
	Morocco	10	8.33	Simple random	Questionnaire
	Sinza	15	12.5	Simple random	Questionnaire
	Osteybay	10	8.33	Simple random	Questionnaire
	Masaki	10	8.33	Simple random	Questionnaire
	Magomeni	10	8.33	Simple random	Questionnaire
	Mikocheni	10	8.33	Simple random	Questionnaire
	Msasani	15	12.5	Simple random	Questionnaire
	Total	90	100
	Respondents from other place
	Ministry of Work	10	8.33	Snow bar sampling	Interview
	OSHA	5	4.16	Snow bar sampling	Interview
	CRB	5	4.16	Snow bar sampling	Interview
	Other stakeholders	10	8.33	Simple random sampling	Questionnaire
	Total	30	100
	Total sample size	120	100