Comparing Two Sample Means Using Normal Distribution
Two independent production lines are monitored for the average lifetime of their products. Assume that the lifetimes are normally distributed and that the variances are equal. Given sample statistics from both production lines, explain how to test whether there is a significant difference between the two means. In your explanation, describe the formulation of the […]
Paired t-test Analysis of Caffeine Effect on Reaction Time
A study investigates the effect of caffeine on reaction time. Ten subjects had their reaction times measured before and after consuming a caffeinated beverage. The differences in reaction times (after – before, in milliseconds) for each subject are recorded as: -5, 2, -3, 4, -6, 1, -2, 3, -4, 0.\n\nUsing a 5% significance level, test […]