A researcher wants to estimate the mean cholesterol level of people in his city.A random sample of 210 people yields a mean cholesterol level of 224 and a standard deviation of 18.Construct a 95% confidence interval for the mean cholesterol level.
A) (219.69,228.30)
B) (219.59,228.40)
C) (218.53,229.46)
D) (214.96,233.03)
E) (221.57,226.43)
Correct Answer:
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