Listed below are body temperatures from five different subjects measured at 8 AM and again at 12 AM. Find the values of d and sd. Ingeneral, what does d represent?

Temperature at 8AM

98.3

99.2

97.8

97.8

97.1

Temperature at 12 AM

99.1

99.8

98.0

97.5

97.3

a. Let the temperature at 8 AM be the firstsample, and the temperature at 12 AM be the second sample. Find the values of d and sd.

b. Ingeneral, what does d represent?