Question
In: Statistics and Probability
A group students collected data on the speed of vehicles traveling through a construction zone on...
A group students collected data on the speed of vehicles traveling through a construction zone on a state highway, where the posted speed was 45 mph. The recorded speed (in mph) of 15 randomly selected vehicles is given below.
35
37
40
41
42
44
46
49
52
54
58
61
64
66
67
1. Use Excel Data Analysis to find the mean, median, and mode of the data set. Make sure that you clearly state or point out which numbers are which.
2.Assuming speeds are approximately normally distributed, use Data Analysis to construct a 95% confidence interval for the true mean speed of drivers in this construction zone. Interpret the interval.
3.Construct a 99% confidence interval for the true mean speed of drivers in this construction zone. Interpret the interval.
4.Compare the widths of the 95% and 99% confidence intervals.
5.What conclusions do you draw about the speeds people drive in this construction zone?
Solutions
orchestra answered 2 years agoRelated Solutions
A group students collected data on the speed of vehicles traveling through a construction zone on...
A group students collected data on the speed of vehicles
traveling through a construction zone on a state highway, where the
posted speed was 45 mph. The recorded speed (in mph) of 15 randomly
selected vehicles is given below. You should be able to copy and
paste them into Excel.
35
37
40
41
42
44
46
49
52
54
58
61
64
66
67
- Use Excel Data Analysis to find the mean, median, and mode of
the data...
A group of Brigham Young University- Idaho Students collected data of the speed of vehicles traveling...
A group of Brigham Young University- Idaho Students collected
data of the speed of vehicles traveling through a construction zone
on a state highway, where the posted construction speed limit was
25 mph. The recorded speed for 14 randomly selected vehicles is
given below.
20, 24, 27, 28, 29, 30, 32, 33, 34, 36, 38, 39, 40, 40
a. determine the sample standard deviation of the speeds
b. comment on the appropriateness of using the Empirical Rule to
make any...
Problem 2: Speeding in a construction zone A group of Brigham Young University—Idaho students collected data...
Problem 2: Speeding in a construction zone
A group of Brigham Young University—Idaho students
collected data on the speed of vehicles traveling through a
construction zone on a state highway, where the speed was 25 mph.
The recorded speed (in mph) of 14 randomly selected vehicles is
given below:
20,24,27,28,29,30,32,33,34,36,38,39,40,40
Assuming speeds are approximately normally distributed,
construct a 95% confidence interval for the true mean speed of
drivers in this construction zone. Interpret the
interval.
Construct a 99% confidence interval...
The speed of 14 randomly selected vehicles passing through a construction zone is given: 20 24...
The speed of 14 randomly selected vehicles passing through a
construction zone is given: 20 24 27 28 29 30 32 33 34 36 38 39 40
40
(a) Use Excel to find the five-number summary for the observed
speeds
• On your worksheet, add a new column anywhere with the
data.
• Click the Insert Function fx button in the Formula Bar
• Select the category Statistical in the Insert Function dialog
box 3
• In the Select a...
Residents are concerned about the speed of vehicles traveling on that road. Drivers seem to have...
Residents are concerned about the speed of vehicles traveling on
that road. Drivers seem to have a tendency to drive at high speeds
on their way out of and into town, even though the speed limit is
only 25 mph. Police officers often record the speeds of the
vehicles and ticket those who are found to be
speeding. the speeds from a sample of 33 vehicles
recorded throughout one weekday :
24
25
26
27
27
27
28
28
28
29...
A recent survey in Spain revealed that 60% of the vehicles traveling on highways, where speed...
A recent survey in Spain revealed that 60% of the vehicles
traveling on highways, where speed limits are posted at 120 km per
hour, were exceeding the limit. Suppose you randomly record the
speeds of ten vehicles traveling on 311 where the speed limit is
120 km per hour. Let X denote the number of vehicles that were
exceeding the limit. a. What is the distribution of X? b. Find P(X
= 10). c. Find the probability that the number...
Matlab question The data you will analyse is distribution zone substation data collected for the financial...
Matlab question
The data you will analyse is distribution zone substation data
collected for the financial years 2005 to 2017. It is available at
https://cloudstor.aarnet.edu.au/plus/s/3Ffy7Qq3ps3i3vj with
password ELEC2103#Assignment.
1. Write a sub-routine to load some or all of the Ausgrid
distribution zone substation data into a useable format in
MATLAB.
2. Write a sub-routine to analyse the data in MATLAB by
modelling/fitting it, using regression, classification, ANOVA or
other machine learning methods. You may wish to pre-process the
data in...
The speeds of 80 vehicles were collected from a roadway section to estimate the mean speed....
The speeds of 80 vehicles were collected from a roadway section
to estimate the mean speed. The margin of error for this sample
mean was reported as 4 km/h at the confidence level of 90%. What is
the sample size required to reduce this margin of error to 2 km/h
(i.e., to ensure that the true mean is within ±2km/h of the sample
mean 90% of the time)?
Problem 2: Speeding in a construction zone Please type the answer. Thank you. A group of...
Problem 2: Speeding in a construction zone Please type
the answer. Thank you.
A group of Brigham Young University—Idaho students collected
data on the speed of vehicles traveling through a construction zone
on a state highway, where the speed was 25 mph. The recorded speed
(in mph) of 14 randomly selected vehicles is given below:
20,24,27,28,29,30,32,33,34,36,38,39,40,40
Assuming speeds are approximately normally distributed,
construct a 95% confidence interval for the true mean speed of
drivers in this construction zone. Interpret the...
Audience profit data collected at the ESPN sports zone web site showed that 26% of the...
Audience profit data collected at the ESPN sports zone web site
showed that 26% of the users were women. Assume that this
percentage was based on a sample of 400 users What would be the 99%
confidence interval estimate of the population proportion?
would you please do it step by step thanks
ADVERTISEMENT
ADVERTISEMENT
Latest Questions
- C++: Write a program that produces truth tables for the following compound propositions. Write the header...
- 1. What is the historical role of investment bankers ? Has this role changed ? Why...
- How were the original Internet requirements met through its design? What are the two main requirements...
- discuss crowdfunding on platforms: What features of the services incorporate virality? What are some of the...
- A textbook of mass 2.08 kg rests on a frictionless, horizontal surface. A cord attached to...
- Describe a time when someone did not really listen to or understand a point you were...
- Enumerations Create an advanced enumeration to represent months (JANUARY – DECEMBER) called enuMonths Add internal properties...
ADVERTISEMENT