The following table shows the hot dogs bought from a street vendor over the course of eight days ("Demand"). Also shown is the temperature for each day in degrees Celsius. Complete parts a and b below.
Temperature °C 
18 
10 
22 
17 
7 
14 
17 
19 


DemandDemand 
47 
31 
35 
38 
16 
22 
40 
31 
a. Calculate the slope and yintercept for the linear regression equation for these data.
The statistical software output for this problem is :
Slope = 1.3588
y intercept = 11.4382
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