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Section 16.3 Exercise 9-TQuestion HelpThe accompanying data show the number of people working and the sales for small bookstore. The regression Iine is given below:...

Question

Section 16.3 Exercise 9-TQuestion HelpThe accompanying data show the number of people working and the sales for small bookstore. The regression Iine is given below: The bookstore decides to have gala event in an attempt to drum up business. They hire 98 employees for the day and bring in total of 542,000. Complete parts through below:Sales 8.702 0.882 Number of Salespeople WorkingB Click the con t0 view the data table_a) Find the regression line predicting Sales from Number of people working wit

Section 16.3 Exercise 9-T Question Help The accompanying data show the number of people working and the sales for small bookstore. The regression Iine is given below: The bookstore decides to have gala event in an attempt to drum up business. They hire 98 employees for the day and bring in total of 542,000. Complete parts through below: Sales 8.702 0.882 Number of Salespeople Working B Click the con t0 view the data table_ a) Find the regression line predicting Sales from Number of people working with the new point added Sales I)Number of Salespeople Working (Round to three decimal places as needed:)



Answers

Bookstore sales revisited Recall the data we saw in Chapter $6,$ Exercise 3 for a bookstore. The manager wants to predict Sales from Number of Sales People Working.
Table cannot copy
Here is the regression analysis of Sales vs. Number of Sales People Working.
Dependent variable is Sales
R-squared $=93.2 \%$
$\mathrm{s}=1.477$
$\begin{array}{ll}{\text { Variable }} & {\text { Coefficient }} \\ {\text { Intercept }} & {8.1006} \\ {\text { Num } \text { Workers }} & {0.9134}\end{array}$
a) Write the regression equation. Define the variables used in your equation.
b) What does the slope mean in this context?
c) What does the y-intercept mean in this context? Is it meaningful?
d) If 18 people are working, what Sales do you predict?
e) If sales for the 18 people are actually $25,000, what is the value of the residual?
f) Have we overestimated or underestimated the sales?

Is there a question? Emma to 92. We want to find the regression line for you in table. So, in theory, literally for everyone column we need to go t expel use and for you to call a winner to booty. Why? I will use my blessing. Enter, We know give you a That is 2.0 double takes seven and they let you off me nineties negative. 17 point 93 and equal correlation coefficient are that is see your point 981 Now as we know the equation off minus X plus be here it is. 10 67. Blast me. These negative sounding 0.9. Double three. So congressional really additional, Linus. Why's he will do to a point 0 67 X minus one point nine. Number three. Okay. Thank you.

So this is our question to 92 in our t A theatrical glitter for Ellen Column. We need to enter the experience and for our tupelo, we need to enter the why we lose my blessing. Enter. We had the very Okay, that is two bones irritable. 67 on the very well be. That is negative. 17 point nine, Double three. And here coalition corporations aren't. That is Syria 0.981 Right there is. We know digression Off line is express me, right? No. Montevideo. And be over here for your ace to 10 Double 67 X Must be nineties. Negative. So on Dean 0.9 Doubletree. So the question of traditional line that is 2.67 x minus. So wandering point number three. Right? Thank you.

This is your question. Number 2 92 We want to find the regulation time for this table. So in a d a d d regulator for Alvin Kalanga Neto Booty X values and we're anto column in your booty while release my resting intern we had, Do you value A That is negative one point through 94 when you will be, that is 49.412 and Nicole relation coefficient are that is negative. 0.974 Your Cordless Inc Dar is negative, equals slope. He's negative. You're a slope of it now is we know the equation off line is. Why is it would express me now Put the video and b Eddie's negative 1.219 or X plus 49 point or want to. Great. So this is our regression line. Thank you.

This is our question, um, of tuna and injury. For the given data, we need to find her congressional vacationland. No, you never tear a theatrical glitter for everyone. Call. Um, you need to put the expertise and while to parliament to booty, why will use my blessing? Enter? We have the radio over. That is negative. 1.294 and the value of B that is 49.412 and the coordination proficient are that is negative. Zero point ran seven for Well, as you know, the aggression of line that is expressed be no what the video play that is negative 1.29 for IX plus B. That is 49.412 with this his or congressional immigration line. Thank you.


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