You may need to use the appropriate technology to answer this question. Following is a portion of the computer output for a regression analysis relating y = maintenance expense (dollars per month) to x = usage (hours per week) of a particular brand of computer terminal. Analysis of Variance SOURCE OF Adj SS Adj MS Regression 1575 . 76 1575 . 76 Error 349 .14 43 . 64 Total 1924 . 90 Predictor Coef SE Coef Constant 6. 1092 0. 9361 X 0 . 8951 0 . 1490 Regression Equation Y = 6. 1092 + 0. 8951 X (a) Write the estimated regression equation. y = (b) Use a t test to determine whether monthly maintenance expense (dollars per month) is related to usage (hours per week) at the 0.05 level of significance. State the null and alternative hypotheses. Ho: Po = 0 Ha: Po # 0 Ho: Po # 0 Ha: Po = 0 Ho: $1 20 Ha: P1