Earnings of mexican street vendors. refer to the world development (february 1998) study of street vendors in the city of puebla, mexico, exercise 4.6 (p. 184). recall that the vendors’ mean annual earnings, e(y), was modeled as a first-order function of age (x1) and hours worked (x2). now, consider the interaction model e(y) = β0 + β1x1 + β2x2 + β3x1x2. the sas printout for the model is displayed in the next column. (a) give the least squares prediction equation. (b) what is the estimated slope relating annual earnings (y) to age (x1) when number of hours worked (x2) is 10? interpret the result. (c) what is the estimated slope relating annual earnings (y) to hours worked (x2) when age (x1) is 40? interpret the result.

Which organization was established to train the hard-core unemployed? - better business bureau- equal employment opportunity commission- environmental protection agency- affirmative action committee- national alliance of business

Annuity payments are assumed to come at the end of each payment period (termed an ordinary annuity). however, an exception occurs when the annuity payments come at the beginning of each period (termed an annuity due). what is the future value of a 13-year annuity of $2,800 per period where payments come at the beginning of each period? the interest rate is 9 percent. use appendix c for an approximate answer, but calculate your final answer using the formula and financial calculator methods. to find the future value of an annuity due when using the appendix tables, add 1 to n and subtract 1 from the tabular value. for example, to find the future value of a $100 payment at the beginning of each period for five periods at 10 percent, go to appendix c for n = 6 and i = 10 percent. look up the value of 7.716 and subtract 1 from it for an answer of 6.716 or $671.60 ($100 × 6.716)

Zoe would like to be able to save for night courses at the local college. which of these would be a good way for zoe to make more money available for savings without dramatically changing her budget? economía