For the data in Problem 3.1, determine the values at the (a) second quartile, (b) second decile, and (c) 40th percentile point for these sales amounts. Problem 3.1 For a sample of 15 students at an...

For the data in Problem 3.1, determine the values at the (a) second quartile, (b) second decile, and (c) 40th percentile point for these sales amounts.

Problem 3.1

For a sample of 15 students at an elementary-school snack bar, the following sales amounts arranged in ascending order of magnitude are observed: $0.10, 0.10, 0.25, 0.25, 0.25, 0.35, 0.40, 0.53, 0.90, 1.25, 1.35, 2.45, 2.71, 3.09, 4.10.