Question
In: Physics
You're an investigator for the National Transportation Safety Board, examining a subway accident in which a...
You're an investigator for the National Transportation Safety Board, examining a subway accident in which a train going at 84 km/hkm/h collided with a slower train traveling in the same direction at 20 km/hkm/h . Your job is to determine the relative speed of the collision, to help establish new crash standards. The faster train's "black box" shows that it began negatively accelerating at 1.8 m/s2m/s2 when it was 44 mm from the slower train, while the slower train continued at constant speed.
What is your report?
Delta V= ?
Solutions
Expert Solution
To avoid the crash, the train 1 has to negatively accelerate more.
genius_generous answered 2 years agoRelated Solutions
A business consultant for the National Transportation Safety Board (NTSB), collected data on the safety of...
A business consultant for the National Transportation
Safety Board (NTSB), collected data on the safety of hybrid
automobiles traveling at 30, 40 and 50 miles per hour. She
randomly assigned the same hybrid model to each condition and
collected data on the pressure applied to the driver’s head during
a crash into a wall at each speed.
What is the independent variable? Dependent
variable?
Is she able to make cause and effect statements about
the cars the head pressure? Explain. ...
Suppose the National Transportation Safety Board (NTSB) wants to examine the safety of compact cars, midsize...
Suppose the National Transportation Safety Board (NTSB) wants to
examine the safety of compact cars, midsize cars, and full-size
cars. It collects a sample of ten for each of the treatments (cars
types). Using the hypothetical data provided below, test whether
the mean pressure applied to the driver’s head during a crash test
is equal for each types of car. At the 0.05 significance level, can
we conclude that there is a difference in the mean pressures
between compact, midsize...
Suppose the National Transportation Safety Board wants to examine the safety of compact cars, midsize cars,...
Suppose the National Transportation Safety Board wants to
examine the safety of compact cars, midsize cars, and full-size
cars. It collects a sample of three for each of the treatments
(cars types). Test the claim that the mean pressure applied to the
driver's head during a crash is equal for all three types of cars.
Use α = 0.05
Compact Cars
643
655
702
Midsize Cars
469
427
525
Full-size Cars
484
456
402
Show your 6 steps labeled in...
Suppose the National Transportation Safety Board (NTSB) wants to examine the safety of compact cars, midsize...
Suppose the National Transportation Safety Board (NTSB) wants to
examine the safety of compact cars, midsize cars, and full-size
cars. It collects a sample of cars each of the cars types. The data
below displays the frontal crash test performance percentages. Test
whether there are statistical differences in the frontal crash test
performance for each type of car. Compact Cars Midsize Cars
Full-Size Cars 95 95 93 98 98 97 87 98 92 99 89 92 99 94 84 94...
4) The National Transportation Safety Board (NTSB) wanted to examine the safety of three different car...
4) The National Transportation Safety Board (NTSB) wanted to
examine the safety of three different car types, as measured by
head crash test percentages. Cars were classified into three
groups: compact (M = , SS = ), midsized (M = , SS = ), and
full-size (M = , SS = ). A one-way ANOVA was conducted and
determine that there was a statistically significant (or no
significant) difference between safety and type of car, F( ___,
_____) = _________.
7. Suppose the National Transportation Safety Board (NTSB) wants to examine the safety of compact cars,...
7. Suppose the National Transportation Safety Board (NTSB) wants
to examine the safety of compact cars, midsize cars, and full-size
cars. It collects a sample of three for each of the treatments
(cars types). The hypothetical data provided below from 10 trials
report the mean pressure applied to the driver’s head during a
crash test for each type of car.
Compact: 635, 671, 648, 685, 648, 651, 654, 682, 687, 627
Midsize: 482, 529, 541, 518, 497, 526, 507, 492,...
Suppose the National Transportation Safety Board (NTSB) wants to examine the safety of compact cars, midsize...
Suppose the National Transportation Safety Board (NTSB) wants
to examine the safety of compact cars, midsize cars, and full-size
cars. It collects a sample of three for each of the treatments
(cars types). Using the data provided below, test whether the mean
pressure applied to the driver’s head during a crash test is equal
for each types of car. Use α = 5%.
Compact cars
Midsize cars
Full-size cars
64
46
47
65
43
45
69
52
40
Average: 66...
Suppose the National Transportation Safety Board (NTSB) wants to examine the safety of compact cars, midsize...
Suppose the National Transportation Safety Board (NTSB) wants to
examine the safety of compact cars, midsize cars, and full-size
cars. It collects a sample of three for each of the car types.
Using the data provided below
Pressure
Car Type
643
Compact
655
Compact
702
Compact
469
MidSize
427
MidSize
525
MidSize
484
FullSize
456
FullSize
402
FullSize
Test, using Mood’s Median Test, whether the median pressure
applied to the driver’s head during a crash test is equal for each...
Suppose the National Transportation Safety Board (NTSB) wants to examine the safety of compact cars, midsize...
Suppose the National Transportation Safety Board (NTSB) wants to
examine the safety of compact cars, midsize cars, and full-size
cars. It collects a sample of cars each of the cars types. The data
below displays the frontal crash test performance percentages.
Compact Cars
Midsize Cars
Full-Size Cars
95
95
93
98
98
97
87
98
92
99
89
92
99
94
84
94
88
87
99
93
88
98
99
89
Patrick wants to purchase a new car, but he...
Suppose the National Transportation Safety Board (NTSB) wants to examine the safety of compact cars, midsize...
Suppose the National Transportation Safety Board (NTSB) wants to
examine the safety of compact cars, midsize cars, and full-size
cars. It collects a sample of cars each of the cars types. The data
below displays the frontal crash test performance percentages. Test
whether there are statistical differences in the frontal crash test
performance for each type of car.
Compact Cars
Midsize Cars
Full-Size Cars
95
95
93
98
98
97
87
98
92
99
89
92
99
94
84
94...
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