1. Identify the population, sample, and variable of interest to the administrators. 2. Do the parking times follow a left skewed distribution?

3. If Σ X^2 = 1400, then what is the sample variance?

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1. I guess the sample is 150. But I don't know the other two?

2. Do I have to graph this? I think I need the info from part 1 do answer this one.

3. Is the sample variance the square root of 1400? I guess we don't need the info from the other parts to answer this one. I got 37.42 rounded.

Can anyone assist with this one? Thanks folks!