Which of the following is a benefit of increasing the sample size when trying to estimate the mean from a sample average? a. A reduction in the bias of the estimate.
b. A reduction in the variability of the estimate.
c. An increase in the width of the resulting confidence interval.
d. There will be no benefit because the population has not changed.

What point is the projection of q on a) r b) s c) t

Someone answer this asap rn 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)) =

Enter the amplitude of the function. f(x)=3cosx