Chicago
, illinois has an elevation of 600
feet above sea level. the elevation of
desert shores, california is -200
feet.

select all the true statements.

desert shores is above sea level.
desert shores is at sea level.
desert shores is below sea level.
the difference in the elevations is less
than 600 feet.
the difference in the elevations is 600 feet.
the difference in the elevations is more than 600 feet.

The management of a supermarket wants to adopt a new promotional policy of giving a free gift to every customer who spends more than a certain amount per visit at this supermarket. the expectation of the management is that after this promotional policy is advertised, the expenditures for all customers at this supermarket will be normally distributed with a mean of $95 and a standard deviation of $20. if the management wants to give free gifts to at most 10% of the customers, what should the amount be above which a customer would receive a free gift?