Here are the 4 of the 7 questions 1. Explain the difference between descriptive and inferential statistics. 2. Describe how increasing the sample size affects a confidence interval for the mean, and explain why it has this effect. 3. Calculate the effect size (delta) when the mean and standard deviation of the experimental group are 10 and 5, respectively, and the mean and standard deviation of the comparison group are 4 and 3. 4. Describe how the methods of analyses for relating categorical variables within a group differ from those used to compare groups on a categorical variable