Answer Happy

6. Consider the following multiple regression, run using 18 months of data: (50,"n" -18) a Airline SC's monthly profit - a + b( Growth Rate of the Macroeconomy) + b2( Price of Jet Fuel) + b3(% of flights that were on-time) +E Standard Error The regression resulted in the following data: Variable Coefficient (i.e. -8°) Growth Rate $ 42,400 $ 20,000 $ 50,000 Price of Jet Fuel $ 900,000 $ 40,000 $ 37.600 On-time %

Growth Rate $ 42,400 $ 20,000 Price of Jet Fuel $ 900,000 $ 50,000 On-time % $ 37,600 $ 40,000 a.) Was the growth rate“ statistically significant" (using “alpha" = .05, in a two-tailed test)? Show your work. (4) b.) Was the price of jet fuel statistically significant" (using “alpha" - .05, in a two- tailed test)? Show your work. (4) c.) Was the on-time percentage“ statistically significant" (using "alpha" = .05, in a two-tailed test)? Show your work. (4)