A town is comprised of 50 neighbourhoods. At random, of these neighbourhoods are selected. Within each selected neighbourhood, every household is queried about the number of cars owned by household members. The resulting data are tabulated in the file CarData.csv linked below. Answers to parts (a), (b), (e), and (f) below are on the scale of "number of cars in the town" so give each of these answers to the nearest integer. Answers to parts (c) and (d) below are on the scale of "number of cars per household" so give each of these answers to three decimal places.

LINK for CarData.csv ( [ the link to 'Download the csv file here' is broken ] )

(a) Based on the data and information above, estimate the total number of cars in the town.

(b) Give a standard error to accompany your estimate in (a).

(c) Based on the data and information above, estimate the average number of cars per household in the town. .

(d) Give a standard error to accompany your estimate in (c).

Now say that additional information is made available: the total number of households in the town is .

(e) Give an alternate estimate of the total number of cars in the town, making use of the additional information. .

(f) Give a standard error to accompany your estimate in (e).