Question: Most people complain that they gain weight during the December holidays, and Yanovski et al. (2000) wanted to determine if that is the case. They sampled the weights of 195 adults in mid-November and again in early to mid-January. The mean weight change for the sample was a gain of 0.37 kg, with a standard deviation of 1.52 kg. State and test the appropriate hypotheses. Use a 5 .01 instead of .05. Be sure to carefully define the population parameter(s) you are testing.