Mathematics, 23.02.2021 23:50 Lujfl
6. A cafe owner wishes to improve on the efficiency of his cafe. One aspect that needs to be looked into is that of the rate at which customers are being served by the staff. The table below shows the number of weeks that eight employees have been working at the cafe and the average number of customers that each served per hour. Weeks at cafe 8 5 15 3 10 2 13 6 Customers served 18.4 18.4 12.2 32.3 10 21 8.2 28.1 16.5 a. Draw a scatter diagram for the given set of data. Define the variable C to represent the average number of customers an employee served per hour and the variable w to represent the number of weeks that employee has been working at the cafe. b. The owner decides to use a straight line to model the data. Is the owner justified? Give a reason for your answer. c. i. Calculate the correlation coefficient for the given data set. ii. Use the method of least squares to determine the line of best fit. iii. Graph the regression line on the scatter diagram in part a. d. Estimate how many customers an employee should be able to serve in one hour if they have been working at the cafe for i) 9 weeks, ii) 50 weeks iii) What constraints can you see this model having?
Answers: 1
Mathematics, 21.06.2019 19:00, ktenz
Asmall business produces and sells balls. the fixed costs are $20 and each ball costs $4.32 to produce. each ball sells for $8.32. write the equations for the total cost, c, and the revenue, r, then use the graphing method to determine how many balls must be sold to break even.
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Mathematics, 21.06.2019 21:30, allendraven89pds755
Which equation is true? i. 56 ÷ 4·7 = 82 ÷ (11 + 5) ii. (24 ÷ 8 + 2)3 = (42 + 9)2 neither i nor ii ii only i and ii i only
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Mathematics, 21.06.2019 22:30, miami158999
Agallon of apple juice cost $7 a pack of eight 4.23oz box of apple juice $2.39 which is a better deal
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6. A cafe owner wishes to improve on the efficiency of his cafe. One aspect that needs to be looked...
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