A random sample of the price of gasoline from 40 gas stations in a region gives the statistics below. Complete parts a) through c). y overbarequals$3.59, sequals$0.26 a) Find a 95% confidence interval for the mean price of regular gasoline in that region. (nothing comma nothing )(Round to three decimal places as needed.) b) Find the 90% confidence interval for the mean. (nothing comma nothing )(Round to three decimal places as needed.) c) If we had the same statistics from a sample of 80 stations, what would the 95% confidence interval be now? (nothing comma nothing )(Round to three decimal places as needed.)

What number should be added to the expression x^2+3x+ in order to create a perfect square trinomial? 3/2 3 9/4 9

Sheila wants to bake six muffins but the recipe is for 12 muffins . this means you only need half of the ingredients listed how much of the of each ingredient does she need? one cup and banana chips ,7 tablespoons oil , two eggs, 3/4 cups flour 1/4 cup walnuts show all you work and justify your answer using a baby toulmin.

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)) =