A Study Was Conducted to Establish the Average Level of Total

A study was conducted to establish the average level of total serum cholesterol in a group of patients with acute coronary syndrome.  The study results were reported separately for males and females.  The mean total cholesterol level was 230 mg/dL for males and 220 mg/dL for females.  Which of the following is the best statistical method to compare the average cholesterol level for males and females?

A) Two-sample t test
B) Two-sample z test
C) Analysis of variance (ANOVA)
D) Chi-square test
E) Meta-analysis

Correct Answer:

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