a.
Explain about the number of calories consumed in a hamburger-chain lunchtime fast-food purchase in City N when the sample standard deviation is larger.
b.
Explain the reason why “the distribution of calories consumed is normal” is not reasonable.
c.
Check whether the sample data provide the convincing evidence that the mean number of calories in a hamburger-chain lunchtime purchase in City N is greater than the lunch recommendation of 750 calories.
d.
Check whether the conclusion in Part (c) generalize to the lunchtime fast-food purchases of all adult in Country A is reasonable or not.
e.
Explain the reason why it is better to use the customer receipt.
f.
Explain about asking customers before they order to provide a receipt when they leave could have introduced a potential bias.
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Introduction to Statistics and Data Analysis
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