Levels of a certain enzyme in the blood have a mean value of 27.0 mg/mL and a standard deviation of 2.5 mg/mL. Complete the following steps to determine what levels of the enzyme correspond to the top 15% of test results. Are you calculating the top or bottom 15%? Answer So, which percentage needs to be converted to an area? Answer What is the area that you will look for in the table (four decimal places)? Answer What area will you actually use from the table (four decimal places)? Answer What is the z-score associated with that area (two decimal places)? Answer What is the cutoff level of the enzyme that corresponds to the top 15% of test results? (round to the nearest tenths) Answer Are values lower or higher than that value also in the top 15%?
Levels of a certain enzyme in the blood have a mean value of 27.0 mg/mL and a standard deviation of 2.5 mg/mL. Complete the following steps to determine what levels of the enzyme correspond to the top 15% of test results.
Are you calculating the top or bottom 15%?
Answer
So, which percentage needs to be converted to an area?
Answer
What is the area that you will look for in the table (four decimal places)?
Answer
What area will you actually use from the table (four decimal places)?
Answer
What is the z-score associated with that area (two decimal places)?
Answer
What is the cutoff level of the enzyme that corresponds to the top 15% of test results? (round to the nearest tenths)
Answer
Are values lower or higher than that value also in the top 15%?
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