A retail store was considering changing its inventory to appeal to a younger audience. The store randomly surveyed its shoppers to determine the average age of people that visit the store. The ages of the first 20 people surveyed are given below. The manager wants to know if the mean age of its shoppers is significantly higher than 21 . Assume that the ages of all shoppers at this store are normally distributed. Use Excel to test whether the true mean age of the store's shoppers is over 21 . Identify the p -value, rounded to three decimal places.Shopper Age 24 22 36 19 22 29 24 18 19 25 18 21 30 23 17 20 26 28 21 39