The Hudson Bay Co. has 4 regional offices: Atlanta, Baltimore, Chicago, and Denver. A simple random sample of the offices will be selected for an internal audit. Assume all sampling is without replacement. List all the possible samples sample size is:

a) 2. (You should have 6 samples)

b) 3. (You should have 4 samples)

For an I got AB AC AD BC BD CD, these are abbreviations for the cities

For b I got ABC ABD ACD BCD, again these are abbreviations for the cities

Do these answers look right?