These 1620 people's height are 54 sets of 30 samples - this means that sample size(n) is 30 and you have 54 of them.

Therefore, in this assignment we make following assumptions:

1. Height data of 1620 people (54 sets of samples containing 30 people's height) are population (I know this actually is a set of sample, but we pretend that this is a population: N = 1620)
2. 30 people's height within each set of sample is a set of sample: therefore sample size is 30 (n n=30) and there are 54 sets of samples.

Based on these assumptions, please compute:

1. Population mean (mean of the 1620 people's height)