problems reflect the precision and accuracy of measured values
A) "Machine epsilon" is a computer term describing the minimum quantity that can be added to 1 to give a different number. If machine epsilon for a certain computer is 0.000001, roughly how many significant figures does the computer carry in it's calculations?
b) To see that it is important to carry more digits in intermediate calculations, determine the square root of 3 to the of power 3, to three significant figures in two ways.
The axial magnetic field at a distance from a magnet falls-off as l/d3 (note: 3 is the power of d, meaning d cube, it's not multiplying with d) where d is the distance to the magnet. A small, strong, permanent magnet generates a magnetic field that is measured by a small probe placed on its axis. It is desired to use the strengt
An experimenter uses an X-ray spectrometer which has a rotating drum scale and a pointer to measure angles. A view of this scale is shown in the attachment.
a) It is expected to measure an X-ray peak which occurs at an angle of around 31.6 degrees. After viewing the scale and pointer, with what accuracy will you quote the res
Please explain and answer:
1) A student performed an experiment to determine the density of neopentyl alcohol with the following results:
Trial 1 Density: 0.815 g/ML
Trial 2 Density: 0.932 g/mL
Trial 3 Density: 0.691 g/mL
(a) Determine the mean and average deviation of these measurements. Are these measurements precise?
Exercise 3: Conversion
For each of the following, convert each value into the designated units. (please see word doc for chart info)
1. 46,756,790 mg = _______ kg
2. 5.6 hours = ________ seconds
3. 13.5 cm = ________ inches
4. 47 °C = _______ °F
Exercise 4: AccuracyandPrecision
1. During gym class, four student
Table 1. Resistor values for stated value andmeasured value for R1 and R2 in Ohms.
R1
(Ω) R2
(Ω)
Stated Value 360 180
Measured Value 362 184
Table 2. Measured Currents and Voltages for series and parallel configuration with calculated resistances.
Configuration I
(mA) I1
(mA) I2
(mA) V
(V) V1
(V) V2
(V) R
(
Find the margin of error that corresponds to the given values of n (times) and x (successes) andthe degree of confidence: n=1400, x=420, 95%. Go 3 decimal places of precision. Does not want upper or lower limits wants to calculate value for E.
Fishkin, CPA, is attempting to determine whether the average height of a player on a basketball team is greater than 80 inches. Based on his sample of basketball players, he determined an estimate of 76 inches with an associated precision of 10 inches. The confidence in this estimate is 90%
A. What on theprecision interval a
How would you incorporate the use of standard units, the use of tools to measure, the importance of precisionandaccuracy, estimation andthe use of manipulatives and other visual aides to a group of third graders to make them understandthe common concept behind measurements regardless of what is being measured? Why is it impo
You have received a business research study done by a consultant for a life insurance company. The study is a survey of customer satisfaction based on a sample of 600. You are asked to comment on its quality. What do you look for?
