Indicative of problems
A certain diagnostic test is indicative of problems only if a child scores in the lowest 10% of all those taking the test. If the mean score is 150 with a standard deviation of 30, what would the diagnostically meaningful cutoff be?
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An automobile manufacturer obtains the microprocessors used to regulate fuel consumption in its automobiles from three microelectronic firms: A, B, and C. The quality-control department of the company has determined that 2% of the microprocessors
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