A shoe company wants to compare two materials A and B for useon the soles of boy

A shoe company wants to compare two materials A and B for useon the soles of boys shoes. In this example each of ten boys in astudy wore a special pair of shoes with the sole of one shoe madefrom Material A and the sole on the other shoe made from MaterialB. The sole types were randomly assigned to account for systematicdifferences in wear between the left and right foot. After threemonths the shoes are measured for wear. Let Ho: d = 0versus Ha: d 0. From this random sample of 10 boysthe sample mean difference was 0.41 and Sd was0.387.