4. The wingspan of a female red-tailed hawk being monitored in order to collect migration data is 127 cm. What are the precision and uncertainty of this measurement? a. precision 1 cm, uncertainty 40.5 cm b. precision 101 cm, uncertainty +10.1 cm C. precision I cm, uncertainty 10.01 cm d.precision 0.001 cm, uncertainty +0.0005 cm 5. Jeanette measured the length of a piece of copper pipe (true length = 17.144 cm) using a tape measure marked in 10 cm increments. What is the most precise measurement she can record? a. 17 cm C. 17.144 cm b. 20 cm d. 20 cm 6. A relay team is practising for a 20-km race. Each runner completed a 5-km run and recorded his or her time. Their times were: 23:14, 27:11, 19:22, and 21:08. (The times are recorded as minutes:seconds.) If the times are added together, how long would it take the team to complete the 20-km race, including uncertainty? a. 76:14 + 3 s C. 90:55 + 2 s b. 1:23:45 + 1.5 s d. 99:00 + 1.5 s 7. A doctor measures a dose of 5 mL of medicine for a child. What is the uncertainty of the measurement? a. 0.01 mL C. 0.5 mL b. 0.04 mL d. 0.01 mL