Computer output for fitting a simple linear model is given below. State the value of the sample slope for the given model. In testing if the slope in the population is different from zero, identify the p-value and use it (and a significance level) to make a clear conclusion about the effectiveness of the model. The regression equation is . Predictor Coef SE Coef T P Constant 85.518 4.339 19.71 0.000 -8.7653 1.0228 -8.57 0.000 Sample slope: Enter your answer; sample slope 8.77 p-value: Enter your answer; p-value Is the model effective? Choose the answer from the menu; Is the model effective?

First, think of what you know. you know that the number t the end of the equation will need to be subtracted because it is the money he lost from buying the lawn mower. and your first two weeks have negative profit, so that tells you that c and d are wrong. now you can plug any of the weeks into a and b to see which one works. i'll start with plugging week 1 into a.this isn't right because it says your answer for week one should be -90.so now we need to try the same thing with b.this one got you the right answer, (sometimes if you only check with one of the weeks multiple will work so you need to check with more of the weeks, but it worked out fine here)this means that b is the correct answer.let me know if you need more clarification. i hope this : )