This paper addresses the customer complaints that have been received regarding the strength of the tissue. There are two measures of tissue strength: machine-directional strength (MD Strength) measured in lb/ream and cross-directional strength (CD Strength) also measured in lb/ream, and we will conduct these tests and report the P value of each of the tests. To understand this tissue strength problem, we designed the null and alternative hypothesis testing and applied experimental design, collected the data, and analyzed the data. This paper will summarize the experiment and the results ( in the complete data set of a company there are 75 observations per day ).