f) In the accompanying diagram, the shaded area represents approximately 95% of the scores on a standardized test. If these scores ranged from 78 to 92, the mean is: (A) 82 (B) 95 (C) 85 (D) 2 (E) 7 (F) None of these 78 x 92
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In the accompanying diagram, the shaded area represents approximately 95% of the scores on a standardized test. If these scores ranged from 78 to 92, find the mean and the standard deviation.
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In the accompanying diagram, the shaded area represents approximately 95% of the scores on a standardized test. If these scores ranged from 78 to 92, what is the standard deviation? Round your answer to decimal.
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Given the score (to decimal places) for each test score with the given class mean and standard deviation: - Kara scored a 92 on a test with a class mean of 78 and standard deviation of 10. - Nora scored a 75 on a test with a class mean of 60 and standard deviation of 26. Which score is relatively higher, the 92 or the 75? Is either score unusual?
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