3. Suppose a fast-food restaurant wishes to estimate average sales volume for a new menu item. The restaurant has analyzed the sales of the item at a similar outlet and observed the following results x715 (mean daily sales) S-114 (standard deviation of sample) n-36 (sample size) The restaurant manager wants to know into what range the mean daily sales should fall 95 percent of the time. Perform this calculation (2 pts). 4.A group of marketing researchers study the expenditure on dinning out. They want to have a 95 percent confident level (Z) and accept a magnitude of error (E) of less than $2.75. The estimate of the standard deviation is $15.80 based on their pilot study. What is the calculated sample size if they want to run a survey? Perform this calculation (2 pts)