,bThe calibration of a scale is to be checked by weighing a 10-kgtest specimen 25 times. Supposethat the results of different weighings are independent of one another and that the weight oneach trial is normally distributed with = 0.200kg. Let denote the true average weight readingon the scale. Suppose the scale is to be recalibrated(the rejection region)if either>10.1032or <9.8968