Statistics FWISD
Why will random samples from a given population not have the same mean?
Sample means will vary because the data values selected for samples are not randomly chosen.
Sample means will vary because for each sample the same data values are selected.
Sample means will vary because the data values are randomly selected from different populations.
Sample means will vary because the data values selected for each sample will be different.

Someone answer asap for ! a discount store’s prices are 25% lower than department store prices. the function c(x) = 0.75x can be used to determine the cost c, in dollars, of an item, where x is the department store price, in dollars. if the item has not sold in one month, the discount store takes an additional 20% off the discounted price and an additional $5 off the total purchase. the function d(y) = 0.80y - 5 can be used to find d, the cost, in dollars, of an item that has not been sold for a month, where y is the discount store price, in dollars. create a function d(c(x)) that represents the final price of an item when a costumer buys an item that has been in the discount store for a month. d(c(x)) =