Adieter believes that the average number of calories in a homemade peanut better cookie is more than the average number of calories in a store-bought peanut better cookie. which excel statements will estimate the difference in mean calories between the two types of cookies using a 90% confidence interval. the data are: homemade store-bought sample size 40 45 mean number of calories 180 179 standard deviation 2 4 a. =(180-179)+(1.96)(0.6749), and =(180-.96)(0.6749) b. =(180-179)+(1.645)(0.6749), and =(180-.645)(0.6749) c. =(45-40)+(1.96)(0.6749), and =(45-.96)(0.6749) d. =(45-40)+(1.645)(0.6749), and =(45-.645)(0.6749) e. none of the above.