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The manager of a bookstore wants to predict Sales from Number of Sales People Working using the accompanying data. Complete parts a through h below.
The manager of a bookstore wants to predict Sales from Number of Sales People Working using the accompanying data. Complete parts a through h below. Click the icon to view the data a) Find the slope estimate, by by = (Round to three decimal places as needed.) b) What does this b, value mean, in this context? A. It means that, on average, an additional increase of b, . $1000 in sales is associated with each additional sales person working B. It means that, on average, the number of sales people working is approximately b, . 1000 multiplied by the total sales. C. It means that, on average, an additional increase of b, . 1000 sales people working is associated with each additional dollar in sales O D. It means that, on average, the total sales will equal b, . $1000 multiplied by the number of sales people working c) Find the intercept, bo- bo=(Round to three decimal places as needed.) d) What does this bo value mean, in this context? Does this value of bo make sense? A. It means that, on average, the expected sales is bo . $1000 with 0 sales people working. It does not make sense, because it is unlikely that any sales would be made with zero sales people working. B. It means that, on average, the total sales will equal bo . $1000 multiplied by the number of sales people working. It makes sense, because bo is greater than zero. C. It means that, on average, an additional increase of bo . $1000 in sales is associated with each additional sales person working. It does not make sense, because the value of bo is much larger than by ()D. It would mean that on average the minimum amount of sales made from ? sales people working is b. . $1000 It makes sense because he is greater than zero 11.C CloudyNumber of Sales People Working Sales (in $1000) cimal places as needed.) 2 10 11 mean, in this context? 14 9 17 verage, an additional increase of b, . $1000 in sales is associat 11 19 average, the number of sales people working is approximately b. 11 20 average, an additional increase of b, . 1000 sales people working 12 20 15 24 average, the total sales will equal b, . $1000 multiplied by the nu 16 24 21 27 e decimal places as needed.) X = 10.8 y = 18.6 SD(y) = 5.66 alue mean, in this context? Does this value of bo make sense? SD(x) = 5.69 r= 0.987 on average, the expected sales is bo . $1000 with 0 sales people wd ade with zero sales people working on average, the total sales will equal bo . $1000 multiplied by the nu the value of bo is much larger than it, on average, an additional increase of bo . $1000 in sales is associat Print Done an that on average the minimum amount of sales made from ? sales OLD -OCBOON T2d) What does this bo value mean, in this context? Does this value of bo make sense? A. It means that, on average, the expected sales is bo . $1000 with 0 sales people working. It does not make sense, because it is unlikely that any sales would be made with zero sales people working. O B. It means that, on average, the total sales will equal bo . $1000 multiplied by the number of sales people working. It makes sense, because bo is greater than zero. O C. It means that, on average, an additional increase of bo . $1000 in sales is associated with each additional sales person working. It does not make sense, because the value of bo is much larger than by D. It would mean that, on average, the minimum amount of sales made from 2 sales people working is bo . $1000. It makes sense, because bo is greater than zero. e) Write down the equation that predicts Sales from Number of Sales People Working, using the variable x to represent Number of Sales People Working. Sales = + x (Round to three decimal places as needed.) f) If 14 people are working, what sales (in dollars) do you predict? The predicted sales are |dollars. Round to the nearest ten dollars as needed.) g) If sales are actually $22,000, what is the value of the residual? residual = dollar(s) Round to the nearest ten dollars as needed.) h) Has the original estimate from part f overestimated or underestimated the sales? 11.C Cloudyecause Do is greater than zero. OC. It means that, on average, an additional increase of bo . $1000 in sales is associated with each additional sales person working. It does not make sense, because the value of bo is D. It would mean that, on average, the minimum amount of sales made from 2 sales people working is bo . $1000. It makes sense, because bo is greater than zero. e) Write down the equation that predicts Sales from Number of Sales People Working, using the variable x to represent Number of Sales People Working Sales =+x (Round to three decimal places as needed.) f) If 14 people are working, what sales (in dollars) do you predict? The predicted sales are dollars. (Round to the nearest ten dollars as needed.) g) If sales are actually $22,000, what is the value of the residual? residual = dollar(s) Round to the nearest ten dollars as needed.) h) Has the original estimate from part f overestimated or underestimated the sales? O overestimated O underestimated O neither overestimated nor underestimated 11.C Cloudy
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