You randomly selected 8 popular fast-food restaurants and measure the calories are there in 3 ounces of french fries. The data (in calories) are 222, 255, 254, 230, 249, 222, 237, 287. If the sample...

Extracted text: You randomly selected 8 popular fast-food restaurants and measure the calories are there in 3 ounces of french fries. The data (in calories) are 222, 255, 254, 230, 249, 222, 237, 287. If the sample standard deviation equals 21 calories a) Find the sample mean calories. b) Create a 99% confidence interval for the population mean calorie. Assume the french fries calories from fast-food restaurant are approximately normally distributed