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The scatter plot shows the number of years of experience, x, and the hourly pay rate, y, for each of 23 cashiers in Texas.
20-
18-
16
14
12
Pay
in dollars
per hour
10 -
6
4
2
O
10
11
12
Years of experience
Use the equation of the line of best fit, y=0.96x + 7.94, to answer the questions below.
Give exact answers, not rounded approximations.
si
(a) For an increase of one year of experience, what is the
predicted increase in the hourly pay rate?
sa
(b) What is the predicted hourly pay rate for a cashier who
doesn't have any experience?
so
(c) What is the predicted hourly pay rate for a cashier with
5 years of experience?
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Answer:The scatter plot shows the number of years of experience, x, and the hourly pay rate, y, for each of 24 cashiers in California.(a) Write an approximate equation of the line of best fit for the data. It doesn't have to be the exact line of best fit.(b) Using your equation from part (a), predict the hourly pay rate for a cashier with 18 years of experience.
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