An emergency service wishes to see whether a relationship existsbetween the outside temperature and the number of emergency callsit receives for a 7-hour period. The data are shown. EmergencyCalls and Temperatures Temperature x 68 74 82 88 93 99 101 No. ofcalls y 7 4 8 10 11 9 13
a. Describe the linear relationship between the temperature andthe number of calls.
b. Calculate the correlation coefficient, r.
c. Is r statistically significant at the 0.05 level.Explain.
d. Determine the equation of the line of best fit.
e. Calculate and interpret the coefficient of determination, 2 r.
f. Predict the number of calls when the temperature is80degrees.
g. Predict the temperature outside when the number of calls is6.
h. Predict the number of calls when the temperature is 59degrees
