Year 12s: what will be the first way you research your future options? >>

Quick help with statistic question please?

The product manager of Microsoft Canada's consumer division found from a Canadian survey that households with children want computer software that promotes learning. She said, "In households without children, educational value is the most important factor in only 16%, but with children, the number jumps to 45%."

(a) If 20 Canadian households without children were randomly selected, how many households would you expect to value education as the most important issue in selecting computer software? Justify your choice of statistical tool.