please answer all 3 for me

A carpenter needs to carefully measure the length of a board. The first measure is 8 inches. When measuring again, the board is 8.125 inches. The carpenter decides to measure the board several times and use the mode to determine the length. What type of error has the carpenter experienced? No answer provided a. Gross error b. Systematic error c. Observational error d. Random error Return to page 9 Question 9 (5 points) A person measures the weight of an object that is known to weigh 4 Ibs. She records measures of 4.2 lbs., 4.7 lbs., 3.5, lbs., and 3.25 lbs. Describe the accuracy and precision of the weights. No answer provided a. High Accuracy/ High Precision b. High Accuracy/ Low Precision c. Low Accuracy/ High Precision d. Low Accuracy/ Low Precision Return to page 10 Question 10 (5 points) A person weighs an object that is known to weigh 2 kg. The recorded weights are 1.2 kg, 1.2 kg, 1.3 kg, and 1.3 kg. Describe the accuracy and precision of the weights. No answer provided a. High Accuracy/ High Precision