Phoenix Mean Temperatures (Historic) The table gives the normal daily mean temperatu...

Phoenix Mean Temperatures (Historic) The table gives the normal daily mean temperatures, based on the 30-year period 1971 through 2000, for Phoenix, Arizona.

a. Explain why the data should be cyclic.

b. Write a sine model for mean daily temperature during the xth month of the year.

c. What is the period of the model? Does this period fit the context?

d. Use the model to predict the mean daily temperature in Phoenix in July. Is the prediction reasonable? Explain.