Mathematics, 08.05.2021 20:00 emily0259
A New Product
7. The coffee shop owner decides to add fruit smoothies to the menu. The table shows sales at different prices.
Smoothie sales:
Price:
4.60
4.20
4.40
3.00
3.80
4.00
3.60
2.80
3.20
4.80
Sales:
0
42
40
41
39
40
38
42
38
0
Use your calculator to perform a linear regression on this data set. Round a and b to the nearest tenth. What is the regression equation? (2 points: 1 point for slope and 1 point for y-value of y-intercept)
8. Complete the table to find the residuals. Round values to the nearest tenth. Then make a residual plot. (4 points: 2 for the table, 2 for the residual plot)
Price:
Actual sales
Predicted sales
Residual
2.8
42
3.0
41
3.2
38
3.6
38
3.8
39
4.0
40
4.2
42
4.4
40
4.6
0
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A New Product
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