1) If the variance of a normal distribution is constant, what affect will changes in the mean have on the distribution? If the mean of a normal distribution is constant, what effect will changes in the variance have on the distribution? What is the connection between a z-value and the standard deviation? 2) A researcher wants to perform a statistical study that involves finding the average number of each color of M&Ms from all standard packs of M&Ms (the kind you buy at the checkout line of a store). Using a large sample of packs, she needs to count the number of each color in each individual pack and then using this data find the average number of yellows, average number of reds, etc. What is the population? How should she best obtain a random sample of packs? Assume that she does not have access to the M&M factory