If a pizza company sells a mean of 63.2 pizzas per day over a period of 30 days. If every possible sample of three days' sales is taken, and then the mean of those samples is calculated, and then the mean is taken of those sample means, the result will be

The input to the function is x and the output is y. write the function such that x can be a vector (use element-by-element operations). a) use the function to calculate y(-1.5) and y(5). b) use the function to make a plot of the function y(x) for -2 ≤ x ≤ 6.