In an experiment the sample mean of a set of measurement is 10
mm and the...
In an experiment the sample mean of a set of measurement is 10
mm and the sample standard deviation is 4 mm for a sample size of
36. Using sketch indicate where we can expect the location of
population mean
Followings are the specifications of a laser displacement
sensor:
(a) Measurement range: +10 mm
(b) Measurement centre point: 50 mm
(c) Resolution: 1.5 μ m
(d) Linearity: +0.05 % FS
(e) Response time: 60 μs
(f) Linear output: 4-20 mA
Answer the following questions based on Specs given above.
(i) Draw input output graph for the sensor and properly label
it.
(ii) Evaluate the sensitivity of the sensor in mA/mm.
(iii) An object is at a distance of 57 mm...
In a Young's double-slit experiment, a set of parallel slits
with a separation of 0.102 mm is illuminated by light having a
wavelength of 600 nm and the interference pattern observed on a
screen 4.50 m from the slits. (a) What is the difference in path
lengths from the two slits to the location of a second order bright
fringe on the screen?
The mean diameter of the square threaded screw having pitch of
10 mm is 50 mm. A load of 20 kN is lifted through a distance of 170
mm. Find the work done in lifting the load and the efficiency of
the screw, when
1. The load rotates with the screw, and
2. The load rests on the loose head which does not rotate with the
screw.
The external and internal diameter of the bearing surface of the
loose head...
Suppose the sample space of an experiment is the set of prime
numbers. Is it possible for all outcomes to be equally likely? Why?
Is it possible for all outcomes to have nonzero probability?
Explain.
“Table 4: Experiment Results”
“Antibiotic”
“Zone of Inhibition (mm)”
“Relative Effectiveness”
“Ampicillin”
10 mm
yes
“Kanamycin”
5 mm
minimal
“Penicillin”
15 mm
yes
“Control”
0 mm
no
1. What is the mechanism of action for each of the
antibiotics used in this experiment?”
2. If a population of bacteria evolves resistance to
penicillin, are these bacteria more likely to be also resistant to
ampicillin or kanamycin? Explain your reasoning.”
In a sample of 100 steel canisters, the mean wall thickness was
8.1 mm with a standard deviation of 0.5 mm.
Find a 95% lower confidence bound for the mean wall thickness.
(Round the final answer to three decimal places.)
The 95% lower confidence bound is
A sample of blood pressure measurements is taken from a data set
and those values (mm Hg) are listed below. The values are matched
so that subjects each have systolic and diastolic measurements.
Find the mean and median for each of the two samples and then
compare the two sets of results. Are the measures of center the
best statistics to use with these data? What else might be
better?
Systolic Diastolic
154 53
118 51
149 77
120 87...
A sample of blood pressure measurements is taken from a data set
and those values (mm Hg) are listed below. The values are matched
so that subjects each have systolic and diastolic measurements.
Find the mean and median for each of the two samples and then
compare the two sets of results. Are the measures of center the
best statistics to use with these data? What else might be
better? Systolic: 150 126 95 140 154 159 145 101 152...
“Sample”
“Germicide”
“Zone of Inhibition (mm)”
“Relative Effectiveness”
“Skin”
“10% Bleach”
15 mm
yes effective
“70% Isopropyl Alcohol”
6 mm
effective but minimal
“Hibiclens™”
13 mm
yes effective
“Control”
0
no
“Nose”
“10% Bleach”
11 mm
yes effective
“70% Isopropyl Alcohol”
7 mm
effective but minimal
“Hibiclens™”
12 mm
Yes effective
“Control”
0
no
“Throat”
“10% Bleach”
20 mm
yes effective
“70% Isopropyl Alcohol”
6 mm
somewhat effective
“Hibiclens™”
16 mm
yes effective
“Control”
no
no
“Shoe”
“10% Bleach”
20...