[Q5e: Only answer if you ABSOLUTELY know how to solve AND the answers match up (

Question

[Q5e: Only answer if you ABSOLUTELY know how to solve AND the answers match up ((tired of getting wrong replies.) So, please make sure you’re really certain. [It’s appreciated.])

Really Explain EACH STEP, including any formulas you used (& how to use the formula), and explain how to compute with a TI-84 preferably/when possible.]

NO JUST POSTING THE ANSWER WITH NO EXPLANATION/ NO CONVINCING EXPLANATION, I WILL ASSUME IT'S WRONG, AS HAS BEEN THE CASE BEFORE. IF YOU'RE THIS TYPE, MOVE ON.

Question

Question options:

1)

2)

3)

4)

5)

1)

(lifetime) = 0.82*(viscosity) - -0.062*(load) + 78.038

2)

(lifetime) = 5.78*(viscosity) - 0.012*(load) + 78.038

3)

We do not have enough information to determine the regression equation.

4)

(lifetime) = 5.78*(load) - 0.012*(viscosity) + 78.038

5)

(lifetime) = 5.78*(viscosity) - 0.012*(load) Predictor Constant viscosity load Coef 78.038 5.78 -0.012 Stdev 69.765 0.82 0.062 t-ratio 1.12 7.05 -0.19 0.2852 1.334e-05 0.8542 s = 20 . 006 R-sq 80 . 57% R-sq (adj ) 77, 34% = Analysis of Variance SOURCE Regression Error Total DE 2 12 19921.89 4802.77 24724.66 MS 9960.95 400.23 24.89

Explanation / Answer

Answer: Option 2; Explanation is as follows:-

Multiple regression analysis is done to understand relation between multiple independent/predictor variables (x1,x2,...xn) and a response variable (y). The regression is linear, i.e., only first power terms are taken as independent predictor variables.

After the regression analysis is done, the output consists of an estimated value of the coefficient (corresponding to each xi) and the possible variance/standard deviation in the estimated values, along with significance levels denoted by the p-value.

Hence, the Multiple Regression equation is as follows:-

y = 5.78*(x1) + (-0.012)*(x2) + constant

= 5.78*(viscosity) - 0.012*(load) + 78.038 (Answer - option #2)

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