Researchers have been studying acorns produced by trees in a certain region. The acorns are used as a food source by various animals. The researchers have recorded the mass of a random sample of acorns (displayed below). Acorn mass (grams): 4.25, 4.14, 4.03, 4.26, 3.97, 4.12, 4.19, 4.15, 3.73 Use Statkey to resample the sample (bootstrap) with 10,000 iterations to create a 90% confidence interval for the mean mass of all acorns: Result: The researchers can be 90% confident that the mean mass of all acorns in this region is between and grams.