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1) An increasing number of consumers believe they have to look out for them

1) An increasing number of consumers believe they have to look out for themselves as a market place. According to a survey conducted by Raj Partners for a magazine, 60% of all consumers have called on 800 or 900 telephone number for information about some product. Suppose that a random sample of 25 consumers is contacted and interviewed about their buying habits. i) What is the probability that 15 or more of the consumers have called on 800 or 900 telephone number for information about some product? ii) What is the probability that more than 20 of these consumers have called on 800 or 900 telephone number for information about home product? iii) What is the probability that fewer than 10 of these consumers have called on or 900 telephone number for information about some product?

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