For this concept check, consider the data shown below: A 3 2 price/pound US dollars apples plums oranges Fig 1. Inconsistency of prices for common fruit items among twelve major cities This graph shows the difference in average fruit prices, as measured in twelve major cities across the world. The error bars represent + 2 SE. . Is there a statistically significant difference between the average price of apples and plums? How do you know? . Is there a statistically significant difference between the average price of apples and oranges? How do you know