A pharmaceutical testing company wants to test a new cholesterol drug. The average cholesterol of the targetpopulation is 200 mg and they have a standard deviation of 25 mg. The company wished to test a sample ofpeople who fall between 1.5 and 3 z-scores above the mean. Into what range must a candidateʹs cholesterollevel be in order for the candidate to be included in the study?
A) 237.5 - 275
B) 225 - 237.5
C) 125 - 162.5
D) 162.5 - 275

Question

Quizplus · Accepted Answer

The range for the candidates' cholesterol levels is calculated using the formula for z-scores: Z = (X - mean) / standard deviation. For 1.5 z-scores above the mean, the calculation is 1.5 * 25 + 200 = 237.5. For 3 z-scores above the mean, it's 3 * 25 + 200 = 275. Therefore, the range is 237.5 to 275 mg.

A Pharmaceutical Testing Company Wants to Test a New Cholesterol