Consider the following simple linear regression model: Yi = βo + β1Xi + εt with εt = rho1εt-1 + rho2εtâ2 + μt. The structure of the error term is an example of: a. First-order autocorrelation
b. One that can be detected with a Durbin-Watson test
c. Perfect multicollinearity of the error term
d. Heteroskedasticity

Tim's phone service charges $23.06 plus an additional $0.22 for each text message sent per month. if tim's phone bill was $28.56, which equation could be used to find how many text messages, x, tim sent last month?

The graph of h(x)= |x-10| +6 is shown. on which interval is this graph increasing

Abag contains 4 red, 7 blue and 5 yellow marbles. event a is defined as drawing a yellow marble on the first draw and event b is defined as drawing a blue marble on the second draw. if two marbles are drawn from the bag, one after the other and not replaced, what is p(b|a) expressed in simplest form? a. 7/16 b. 7/15 c. 14/16 d. 14/15