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. Learning Management Suggested time: up to 18 min People use several methods to keep track of appointments, meetings, and deadlines. Some of these are using a desk calendar, using informal notes of scrap paper, keeping them in your head, using a day planner, using an electronic organizer, and keeping a formal to-do list. Suppose a business researcher wants to test the hypothesis that there is no significant difference in the proportion of marketing managers, who keep track of such obligations in their head, and the accountants. To test this, a business researcher samples 440 marketing managers and 540 accountants. Of those sampled, 280 marketing managers keep track in their head while 290 of the accountants do so. Using a 10% level of significance, what does the business researcher find? [8 marks]