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3. Education consultant organization has designed a standard test for Mathematics aptitude. The Scores test is normally distributed with a mean of 74 and a

3. Education consultant organization has designed a standard test for Mathematics aptitude. The Scores test is normally distributed with a mean of 74 and a standard deviation of 14. (a) If a subject is randomly selected and tested, nd the probability that his score will be between 75 and 90. (Q) If a subject is randomly selected and tested, nd the probability that his/her score will be more than 85. c) If a sample of 25 test aptitude is collected, What is the probability that the sample mean will be below 70

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