standard deviation is given

October 5, 2006 10:20am CST
a softdrink machine is regulated so that it discharges an average of drink is normally distributed with a standard deviation of 0.5 ounces. a. what fraction of the cup will contain more than 11 ounces? b. what is the probability that the cups will contain 9-11 ounces? c. how many cups will most likely to overflow, if 11 ounces cups will be used for the next 2000 drinks? d. below what value do we get the smallest 25% of the drinks?
No responses