Using the significance levels reported by Forecast X^TM, at what level can we reject a one-sided null relating to a slope coefficient's statistical significance such that we are 95% confident?

Multiple Choice

• 0.1
• 0.09
• 0.11

• 0.12

First-differencing the data is a way to

Multiple Choice

• reseasonalize the data.
• remove any data nonlinearities.
• detrend the data

Cross-sectional regression models linking personal disposable income to consumption expenditure are likely to be hampered by

Multiple Choice

• homoscedasticity.
• None of the options are correct.
• heteroscedasticity.
• nonlinearity.