Three apprentice tailors ( X, Y, and Z ) are assigned the task of measuring the seam of a pair of trousers. Each one makes three measurements. The results in inches are X ( 31 .5, 31 .6, 31 .4 ) ; Y ( 32 .8, 32 .3, 32 .7 ) ; Z ( 31 .9, 32 .2, 32 .1 ) . The true length is 32.0 in. Comment on the precision and the accuracy of each tailor's measurements.
Three apprentice tailors ( X, Y, and Z ) are assigned the task of measuring the seam of a pair of trousers. Each one makes three measurements. The results in inches are X ( 31 .5, 31 .6, 31 .4 ) ; Y ( 32 .8, 32 .3, 32 .7 ) ; Z ( 31 .9, 32 .2, 32 .1 ) . The true length is 32.0 in. Comment on the precision and the accuracy of each tailor's measurements.
Solution Summary: The author analyzes the precision and accuracy of each tailor's measurements. Accuracy indicates the extent of conformity between the result and the true value.
Three apprentice tailors
(
X, Y, and Z
)
are assigned the task of measuring the seam of a pair of trousers. Each one makes three measurements. The results in inches are
X
(
31
.5, 31
.6, 31
.4
)
; Y
(
32
.8, 32
.3, 32
.7
)
; Z
(
31
.9, 32
.2, 32
.1
)
. The true length is 32.0 in. Comment on the precision and the accuracy of each tailor's measurements.
The drug cyclophosphamide is administered for breast cancer at a daily dose of 100 mg/m^2 for up to 14 consecutive days. The BSA of a patient measuring 5 ft and 1 inch in height and weighing 95 lbs is ____ m^2, and total quantity administered over the 2-week period is ____ g.
Lead has a density of 11.34 g/cm^3 and oxygen has a density of 1.31 x 10^-3 g/cm^3 at room temperature. How many cm^3 are occupied by 1g of lead? By 1 g of oxygen? Comment on the difference in volume for the two elements.
The Kohinoor Diamond ( d= 3.51 g/cm^3) is 108 carats. If one carat hasa mass of 2.00 x 10^3 mg , what is the mass of the Kohinoor Diamond in pounds? What is the volume of the diamond in cubic Inches?
A waterbed filled with water has the dimensions 8.0 ft x 7.0 ft x 0.75 ft. Taking the density of water to be 1.00 g/cm^3,how many kilograms of water are required to fill the waterbed?
Vinegar contains 5.00% acetic acid by mass and has a density of 1.01 g/mL. What mass(in grams) of acetic acid is present in 5.00 L of vinegar?
A student determined in a set of four experiments that the density of magnesium metal was 1.66 g/ml,1.65 g/ml, 1.67 g/ml, 1.67 g/ml. The accepted value for its density is 1.72 g/ml. What can you concludeabout the precision and accuracy of the student’s data?
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Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell