Here's a list of units of toys sold by T&K over a 12-month period during 2015. Were the sales of 31,456 for one month in 2016 significantly different from monthly sales in 2015?
Units Sold in 2015
January 34,518
February 29,540
March 34,889
April 26,764
May 31,429
June 29,962
July 31,084
August 30,506
September 28,546
October 29,560
November 29,304
December 25,852
What is the resulting p-value?
Is this lower than alpha (.05)?
Do you reject the null or fail to reject the null?
What do you conclude then about the sales of 31,456 for one month in 2016 compared to all monthly sales in 2015. Are they different or not?