The DVD disk company makes DVD's to be recorded on at are 120 mm wide. The size of the manufactured disks have a standard deviation of 1 mm. The
company manufactures 1000 DVD's an hour.

A)What % of the DVD's would you expect to be greater than 120 mm wide?

B)In one hour how many DVD's would you expect to be between 119 mm
and 121 mm?
DVD's are rejected if they are more than 122 mm wide or less than 118 mm wide? How many DVD's would you expect to be rejected one hour?

Fanny mendelssohn manages all the magazines and paperback books at a local grocery store. she prices many paperbacks to sell at $7.99. the cost to the store is $5.29. what is the markup rate on a paperback book, based on its cost?

Suppose babies born after a gestation period of 32 to 35 weeks have a mean weight of 25002500 grams and a standard deviation of 800800 grams while babies born after a gestation period of 40 weeks have a mean weight of 27002700 grams and a standard deviation of 385385 grams. if a 3232-week gestation period baby weighs 21252125 grams and a 4040-week gestation period baby weighs 23252325 grams, find the corresponding z-scores. which baby weighs lessless relative to the gestation period?

Which of the following is an example of conditional probability