Let's consider a company's growth rate of sales. Year Annual Growth Rate (%) 1993 6.80 1994 6.10 1995 5,60 1996 5.40 1997 4.90 1998 4.50 1999 4.20 2000 4.00 2001 4.80 2002 5.80 2003 6.20 2004 5.50 2005 5.00 6.10 2006 1) The store manager found that the average growth rate in 80s was 6.00%. Using the data, prove if the average growth rate for the sample period was same as that of 80s. 2) Prove if the average growth rate was less than 6%.