Socially Conscious Consumers

In March $2015,$ a Nielsen global online survey "found that consumers are increasingly willing to pay more for socially responsible products." ${?}^1$ Over $30,000$ people in $60$ countries were polled about their purchasing habits, and $66\%$ of respondents said that they were willing to pay more for products and services from companies who are committed to positive social and environmental impact. We are interested in estimating the proportion of all consumers willing to pay more.

$1$"Sustainable Selections: How Socially Responsible Companies are Turning a Profit,"

www$.$nielsen.com, October $12,2015.$

$($a$)$ Give notation for the quantity we are estimating.