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5. A survey of 500 families was conducted to know their opinion about a particular detergent powder. If 375 families liked the detergent powder and the remaining families disliked it, find the probability that a family chosen at random (1) Likes the detergent powder (ii) Does not like it |
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Answer» if 375 like it, that means that 125 DONT like it. Thus probability of picking a FAMILY who likes it is given by FAVORABLE outcomes/total outcomes= 375/500 = 0.75andprobability of not liking it is 1- probability of liking it = 1 - 0.75= 0.25or we can also find it directly by 125/500 = 1/4 = 0.25 |
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