As part of a study for a new medication, a drug company samples cholesterol levels from a group of patients. the company reports that a 90% confidence interval for the cholesterol levels for the population being studied is (127.6, 168.8). what is the margin of error? a) 18.54 b) 20.60 c) 37.08 d) 41.20

Answer-

The margin of error of the sample is 20.60

Solution-

We know that,

where:

According to the question,

Subtraction equation 2 from equation 1,

Therefore, the margin of error of the sample is 20.60

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step-by-step explanation:

so, converting firstly the mixed fractions to improper fractions and then "adding".