Exam DA0-001 topic 1 question 188 discussion

The inferential statistical method used to determine if there is a significant difference between the means of two groups is option D: t-test. The t-test is specifically designed to compare the means of two groups and determine if the difference between them is statistically significant. It calculates a t-statistic and a p-value, which indicates the probability of observing the difference in means if there is no true difference between the groups. Option A, the p-value, is not a statistical method itself but rather a result obtained from various statistical tests, including the t-test. Option B, Z-score, is used to standardize data points in a normal distribution and is not directly used to compare means of two groups. Option C, Chi-squared test, is used for categorical data analysis and is not appropriate for comparing means of continuous variables between two groups.