Question
3.* Public transportation and the automobile are two methods an employee can use to get to...
3.* Public transportation and the automobile are two methods an employee can use to get to work each day. Samples of times recorded for each method are shown. Times are in minutes. PublicTransportation: 18 15 13 20 22 17 11 14 3 16 Automobile: 12 24 19 21 19 25 23 9 17 10 a) Compute the sample mean time to get to work for each method. b) Compute the sample standard deviation for each method. c) On the basis of your results from a) and b), which method of transportation should be preferred?
Show the process please
Homework Answers
Answer #1
Dear student , please like it.
Thanks.
Not the answer you're looking for?
Similar Questions
A manufacturing company is purchasing metal pipes of standard length from two different suppliers, ABC and...
A manufacturing company is purchasing metal pipes of standard
length from two different suppliers, ABC and XYZ. In the past two
months there are increasing complaints by the Production Manager
that delivery times by ABC present higher variability in comparison
to the delivery times by XYZ. The Production Manager is worried
that this variability will make it harder to efficiently schedule
the production process.
Does the sample data indicate a statistically significant
difference at the 5% level? Justify your answer....
A manufacturing company is purchasing metal pipes of standard length from two different suppliers, ABC and...
A manufacturing company is purchasing metal pipes of standard
length from two different suppliers, ABC and XYZ. In the past two
months there are increasing complaints by the Production Manager
that delivery times by ABC present higher variability in comparison
to the delivery times by XYZ. The Production Manager is worried
that this variability will make it harder to efficiently schedule
the production process. Does the sample data indicate a
statistically significant difference at the 5% level? Justify your
answer....
Jeff Parent is a statistics instructor who participates in triathlons. Listed below are times (in minutes...
Jeff Parent is a statistics instructor who participates in
triathlons. Listed below are times (in minutes and seconds) he
recorded while riding a bicycle for five laps through each mile of
a three-mile loop. Use a 0.05 significance level to test the claim
that it takes the same time to ride each of the miles. Does one of
the miles appear to have a hill?
Mile 1
3:15
3:24
3:23
3:22
3:21
Mile 2
3:19
3:22
3:21
3:17
3:19
Mile...
A random sample of 16 pharmacy customers showed the waiting times below (in minutes). 20, 27,...
A random sample of 16 pharmacy customers showed the waiting
times below (in minutes).
20, 27, 24, 23, 19, 21, 18, 17
22, 15, 18, 32, 16, 20, 19, 19
Find a 90 percent confidence interval for μ, assuming that the
sample is from a normal population. (Round your standard deviation
answer to 4 decimal places and t-value to 3 decimal places. Round
your answers to 3 decimal places.) The 90% confidence interval
_____ to _____
Four different power plants operated by the same power utility are monitored in terms of their...
Four different power plants operated by the same power utility
are monitored in terms of their greenhouse gas emissions. The
utility has taken 4 samples from the flue gases of each one, during
different times of the day, and has measured the dust emission
content (mg per m^3 ). The data is provided below. Does the data
provide sufficient evidence to indicate a difference in the mean
amount of carbon dioxide pollution? Use alpha = 0.05.
Power Plant
Emissions
A...
A research council wants to estimate the mean length of time (in minutes) that the average...
A research council wants to estimate the mean length of time (in
minutes) that the average U.S. adult spends watching television
using digital video recorders (DVR’s) each day. To determine the
estimate, the research council takes random samples of 35 U.S.
adults and obtains the following times in minutes.
24
27
26
29
33
21
18
24
23
34
17
15
19
23
25
29
36
19
18
22
16
45
32
12
24
35
14
40
30
19
14...
An investment banking firm was considering two spreadsheet software for possible use in its large data...
An investment banking firm was
considering two spreadsheet software for possible use in its large
data analysis operations. A sample of 25 typical analysis problems
were carried out using both software on the firm’s standard
personal computer. The time in minutes needed to load the data,
program the spreadsheet calculations, carry out the analysis, and
print the results was recorded for each problem for each software.
The data for software A are stored in column 1 of the Excel
data...
A researcher is interested in brain training services like Luminosity affects the speed with which people...
A researcher is interested in brain training services like
Luminosity affects the speed with which people can solve puzzles.
To test this, she has research participants complete brain training
exercises daily, and measures the speed with which they solve a
puzzle at four different times: before practice, after 1 week of
training, after 2 weeks of training, and after 3 weeks of training.
Eight subjects participate in the experiment; each subject receives
every level of the IV. Their data (time...
A computer scientist is investigating the usefulness of two different design languages in improving programming tasks....
A computer scientist is investigating the usefulness of two
different design languages in improving programming tasks. Twelve
expert programmers, familiar with both languages, are asked to code
a standard function in both languages, and the time (in minutes) is
recorded. The data follow:
Programmer
Time
Design Language 1
Design Language 2
1
17
18
2
17
14
3
21
20
4
14
11
5
18
23
6
24
21
7
15
10
8
14
13
9
21
19
10
23...
The Money Pit Mortgage Company is interested in monitoring the performance of the mortgage process. Fifteen...
The Money Pit Mortgage Company is interested in monitoring the
performance of the mortgage process. Fifteen samples of five
completed mortgage transactions each were taken during a period
when the process was believed to be in control. The times to
complete the transactions were measured. The means and ranges of
the mortgage process transaction times, measured in days, are as
follows:
Sample
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Mean
19...
ADVERTISEMENT
Need Online Homework Help?
Get Answers For Free
Most questions answered within 1 hours.
ADVERTISEMENT
Active Questions
asked 5 minutes ago
asked 5 minutes ago
asked 9 minutes ago
asked 37 minutes ago
asked 45 minutes ago
asked 51 minutes ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago
asked 2 hours ago
asked 2 hours ago
asked 2 hours ago