Question

Makeup artists evaluated two brands of liquid eye liner for wear time (the amount of time in hours before the appearance on the eyes is no longer noticeable) using 45 people. Descriptive statistics from the paired samples t-test results are as follows: d̄ = ?, sd = ?, nd = 45. The 95% confidence interval for the mean paired difference (Luxury Brand – Kylie Cosmetics Brand) is (1.4 , 2.6).

Find d̄ =

Answer 1