The Hourly Production of a Plastic Cup Company Is Tracked

Multiple Choice

The hourly production of a plastic cup company is tracked over the most recent several months and is found to be normally distributed.Comparing the mean of this data set to a similar data set collected last year during the same months, the business analyst notices that the mean has increased, while the overall shape of the distribution has not.Which of the following would not be a possible explanation for this difference?

A) the overall distribution has shifted to the right
B) one or two large outliers occurred in the more recent data set
C) the mode increased as well
D) one or two small outliers occurred in the earlier data set
E) the overall distribution has shifted to the left