Acompany sells cookies in 250-gram packs. when a particular batch of 1,000 packs was weighed, the mean weight per pack was 255 grams and the standard deviation was 2.5 grams.
assuming the data is normally distributed, we can conclude that
% of the packs weighed less than 250 grams.

An automated water dispenser fills packets with one liter of water on average, with a standard deviation of 5 milliliter. the manual says that after a year of operation the dispenser should be tested to see if it needs recalibration. a year later a number of filled packets are set aside and measured separately. it is found that the average packet now contains about 0.995 liters. does the dispenser need calibration? explain your answer.

The hawaiian alphabet has 12 letters. how many permutations are posible for each number of letters?

If g(x) is an odd function, which function must be an even function?