The following are 42 consecutive pizza breads baked by a newly improved oven model during 6 weeks:25,28,32,31,30,29,16,18,31,24,72,55,61,33,30,44,46,59,62,75,75,80,70,64,48,52,39,38,61,64,38,48,35,34,49,58,63,36,75,80,32, and 48 . Use the method of runs above and below the median and the 0.01 level of significance to test the null hypothesis of randomness against the alternative that there is a trend.