Question: Using the dataset NutritionStudy, we calculate that the average number of grams of fat consumed in a day for the sample of n = 315

Using the dataset NutritionStudy, we calculate that the average number of grams of fat consumed in a day for the sample of n = 315 US adults in the study is x̅ = 77.03 grams with s = 33.83 grams.
(a) Find and interpret a 95% confidence interval for the average number of fat grams consumed per day by US adults.
(b) What is the margin of error?
(c) If we want a margin of error of only ±1, what sample size is needed?

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