7. Suppose you are carrying out a one-sample ztest using the sample average. The specic details about the data are not important here. For each of the following changes that could occur in the description of the data, say whether the change will INCREASE or DECREASE the p-value, and then explain why. (a) The sample size increases. (b) The sample average moves closer to the population average specied by the null hypothesis. (0) The sample standard deviation increases. (d) You do a one-tailed test instead of a two-tailed test