house construction in the historic district\n| | poured concrete | field stone & mortar | combination |…
house construction in the historic district\n| | poured concrete | field stone & mortar | combination | total |\n|--|--|--|--|--|\n| historically - protected | 0 | | | 205 |\n| non - historically - protected | | | 18 | 134 |\n| total | | 203 | | 339 |\nthe houses in the \historic district\ of a particular town are either historically protected or not. the table partially represents these homes and whether they have foundations made from poured concrete, mortar and field stone, or a combination of both. if only 4.5% of the non - historically - protected homes have a field stone and mortar foundation, how many homes is this?\n(round to the nearest whole number.)
Answer
Explanation:
Step1: Find number of non - historically - protected homes
The total number of homes is 339 and the number of historically - protected homes is 205. So the number of non - historically - protected homes is $339 - 205=134$.
Step2: Calculate number of non - historically - protected homes with field stone and mortar foundation
We know that 4.5% of the non - historically - protected homes have a field stone and mortar foundation. To find this number, we use the formula $n = p\times N$, where $p = 0.045$ (4.5% in decimal form) and $N = 134$. So $n=0.045\times134 = 6.03$.
Step3: Round the result
Rounding 6.03 to the nearest whole number gives 6.
Answer:
6