Drainpipe comes in lengths of 2.5 metres. A man wants to buy drainpipe to fit down one side of his house from the ground to the gutter. Estimate how many lengths he will need.

Amayoral candidate would like to know her residents’ views on a tax on sugar drinks before the mayoral debates. she asks one thousand registered voters from both parties. these voters are an example of a census population convenience sample simple random sample