IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. (a) Is an 1Q score of 143 considered significantly high? Find the relevant probability to decide if the soore is significantly high. because the relevant probability is (Use three decimal places for the probability) (b) What proportion of people have an IQ soore between 90 and 135? (Round to three decimal places) (c) Individuals in the top 5% of IQ scores may join a special group called Mensa. Determine the lowest IQ score possible for this group. Round your IQ score to the nearest tenth.

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