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Question 2 1 pts On the Sampling Distribution of the Sample Mean (Continuous Population) app in artofstat.com, under Select Population Distribution, choose Skewed from the drop down menu. Change the Sample size (n) to 20. Under "Select how many samples (of size n) you want to simulate drawing from the population:", make sure the button with 1 sample is selected. Now click on Draw Sample(s) - two new graphs will appear. On the middle graph labeled Data Distribution there is a histogram. Note the mean and standard deviation given on the graph. Which of the following statements is true? The mean is a parameter, but the standard deviation is an estimator. Both the mean and standard deviation are parameters, Both the mean and standard deviation are estimators, The standard deviation is a parameter, but the mean is an estimator