After high profile crashes in 2018 and 2019, and multiple whistleblower testimonies surfacing in 2024, air travelers are now developing an aversion to flying on passenger airplanes manufactured by Boeing. You have an upcoming trip that requires a round-trip flight, but before you book your plane tickets, you want to investigate for yourself if Boeing planes are less safe than non-Boeing planes. You want to estimate, on average, how many more crashes Boeing planes experience compared to non-Boeing planes. You have data for a sample of 41 passenger plane models that records if the plane model is a Boeing or non-Boeing model, and the number of fatal crashes per million flights for each plane model.Let the subscript 'B' denote Boeing planes and the subscript 'N' denote non-Boeing planes. The statistic that represents your "best guess" about the parameter is: Group of answer choices (xbar_B - xbar_N) (mu_B - mu_N) (pi_B - pi_N) (p-hat_B - p-hat_N)