Question
Temperature (x) 65 70 75 80 85 90 95 100 105 Number of ice cream cones sold per hour (y) 8 10 11 13 12
Temperature (x) 65 70 75 80 85 90 95 100 105
Number of ice cream cones sold per hour (y) 8 10 11 13 12 16 19 22 23
Calculate the linear correlation coefficient r, for temperature (x) and number of ice cream cones sold per hour (y). (round to 3 decimal places)
Is there a linear relation between the two variables x, and y? If yes, indicate if the relationship is positive or negative. (Hint : use the Critical Value table)
Construct the least squares regression line for temperature (x) and number of ice cream cones sold per hour (y). (round to 3 decimal places)
Predict the number of ice cream cones sold per hour when the temperature is 88. (round to nearest whole number)
Would it be reasonable to use the least squares regression line to predict the number of ice cream cones sold when it is 50 degrees?
Step by Step Solution
There are 3 Steps involved in it
Step: 1
Get Instant Access to Expert-Tailored Solutions
See step-by-step solutions with expert insights and AI powered tools for academic success
Step: 2
Step: 3
Ace Your Homework with AI
Get the answers you need in no time with our AI-driven, step-by-step assistance
Get Started