The following table shows the amount of a dinner bill and the amount of money left as a tip for 6 customers at a restaurant.

a) Determine the correlation coefficient between the amount of a dinner bill and the amount of money left as a tip.

b) Determine whether a correlation exists at α = 0.05.

c) Determine the equation of the line of best fit for the amount of a dinner bill and the amount of money left as a tip.

d) Use the equation in part (c) to estimate the amount of money left as a tip by a customer with a dinner bill of $25.00.

Round both m and b the nearest hundredth.

Transcribed Image Text:

Bill ($) 35.20 22.93 16.45 45.82 54.16 39.70 Tip ($) 5.50 4.50 2.00 9.00 10.00 5.75