The Economist Intelligence Unit says there were 132.6 computers per 100 people in Canada in 2012. We ask 1000 randomly selected Canadian adults how many computers they have; 100 of them say none; 500 of them say one; 200 of them say two, and 100 say three.

a) Calculate the mean number of computers per person in the sample.

b) Estimate the mean number of computers per person in Canada, stating your assumptions.

c) Calculate the standard deviation of the number of computers in the sample.

d) What is the standard error of the estimate in (b).

e) Can this question be answered using (i) the sampling distribution for proportions, or (ii) the sampling distribution for means? Give your reasons.