Calculate a 15 tip on a 1390 bill round up to 14 and

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Calculate a 15% tip on a $13.90 bill Round up to $14, calculate 10% (1.40), and add half of that amount ( .70) to result in $ 2.10 Everyday errors in judgment . . . -- won't travel in airplane because it seems to be more dangerous than driving -- timing investments in the stock market based on how it is trending high or low -- forget to bring my lunch or keys if they are not in the usual location as I leave in the morning
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Obstacles to Effective Reasoning CONFIRMATION BIAS the tendency to look only for information that confirms one’s beliefs (“Just as I would have thought!”) MENTAL SET the tendency to unduly rely on problem-solving strategies that have been successful in the past (“it always worked this way before !”)
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Sometimes fixed mental sets can impede effective problem-solving Solutions to the nine-dot problem . . . Creativity original and useful thinking
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DIVERGENT THINKING flexible, inventive, and imaginative approaches CONVERGENT THINKING focused, integrative problem-solving skills Language significantly shapes how we think
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LINGUISTIC RELATIVITY HYPOTHESIS different languages cause people to experience and think differently about the world time, place, values, people
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