Q1) There are many methods utilized by people to organize their lives in terms of keeping track of appointments, meetings and deadlines. Some of these comprise using desk, calendar, using informal notes of scrap paper, keeping them "in your head", using daily planner, and keeping formal "to do list". Assume a business researcher wishes to test hypothesis that greater proportion of marketing managers keep track of such obligations "in their head" than do accountants. To test this, business researcher samples 400 marketing managers and 450 accountants. Of those sampled, 220 marketing managers keep track "in their head" whereas 216 of accountants do so. Using a 5% level of significance, what does business researcher determine?