Final answer:
To estimate the number of people employed by the 30 organizations represented by the HRDs who responded to the survey, we calculate the average number of organizations represented by each HRD and multiply it by the number of HRDs.
Step-by-step explanation:
To estimate the number of people employed by the 30 organizations represented by the 30 HRDs who responded to the survey, we need to find the number of people each HRD represents on average. Currently, 45% of the 333 HRDs invited to complete the survey actually completed it, which is approximately 150 HRDs. So, on average, each HRD represents 333/150 = 2.22 organizations.
If we assume that each organization represented by the 30 HRDs has the same number of employees, we can estimate the total number of people employed by these organizations by multiplying the average number of organizations represented by each HRD (2.22) by the number of HRDs who responded to the survey (30). Therefore, the best estimate of the number of people employed by the 30 organizations is 2.22 * 30 = 66.6, which can be rounded to 67.