Compute the mean and variance of a lognormal variable Y if the mean and the variance of the underlying normal variable are 
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Definitions:
Burgers
A type of sandwich consisting of one or more cooked patties of ground meat, usually beef, placed inside a sliced bread roll or bun.
Onion Rings
A type of fast food consisting of rings of onion dipped in batter and deep-fried.
Indifference Curve
A graph showing different bundles of goods between which a consumer is indifferent, reflecting their preferences.
Oreos
A popular brand of sandwich cookies consisting of two chocolate wafers with a sweet creme filling in between.
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