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# A study reported of the workforce has a drug problem a drug enforcement official wished to investigate this statement

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n = 65 California boys. It was used to predict 18-year old height from 6-year old height. - At age 6, the average height was 46 inches with a standard deviation of 1.7 inches - At age 18, the average height was 70 inches with a standard deviation of 2.5 inches - r = .80 use this information to determine the LSRL
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d that 70% of adults go to the doctor for their yearly checkup. If you want to test the validity of this claim, how many adults must be surveyed in order to be 90% confident that the sample percentage is in error by no more than 5 percentage points?
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estigate this statement. In his samaple of 20 employed workers. 1 how many would you expect to have a drug problem? What is the standard deviation. 2. What is the likelihood that none pf the workers sampled has a drug problem? 3. What is the likelihood at least one has a drug problem
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1.AU MAT 120 Systems of Linear Equations and Inequalities Discussion

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