So I am doing practice assignments and I am really confused on one question. It says to find and graph the sampling distribution and while both answers are given I'm unsure as to how it is graphed.
Here is the question: in area A the selling price of homes has a normal distribution with mean 130 thousand and standard deviation of 20 thousand.
suppose that n=30 homes are selected at random. Find and graph the sampling distribution of the sample mean. Now, I get that the middle of the graph is the mean (so the highest point is at 130) but I do not get why in this graph particularly, it goes up to around .12 or why the width is the given width. All the information we are given is above so we don't have enough to draw a histogram and then a curve. Any help would be great!
Here is the question: in area A the selling price of homes has a normal distribution with mean 130 thousand and standard deviation of 20 thousand.
suppose that n=30 homes are selected at random. Find and graph the sampling distribution of the sample mean. Now, I get that the middle of the graph is the mean (so the highest point is at 130) but I do not get why in this graph particularly, it goes up to around .12 or why the width is the given width. All the information we are given is above so we don't have enough to draw a histogram and then a curve. Any help would be great!