Question
In: Statistics and Probability
A travel association reported the domestic airfare (in dollars) for business travel for the current year...
A travel association reported the domestic airfare (in dollars) for business travel for the current year and the previous year. Below is a sample of 12 flights with their domestic airfares shown for both years.
| Current Year |
Previous Year |
|---|---|
| 345 | 315 |
| 526 | 463 |
| 420 | 450 |
| 216 | 206 |
| 285 | 263 |
| 405 | 432 |
| 635 | 585 |
| 710 | 650 |
| 605 | 545 |
| 517 | 547 |
| 570 | 496 |
| 610 | 580 |
A. Calculate the test statistic. (Use current year airfare − previous year airfare. Round your answer to three decimal places.)
Calculate the p-value. (Round your answer to four decimal places.)
B. What is the sample mean domestic airfare (in dollars) for business travel for each year?
current$ previous$
C. What is the percentage change in mean airfare for the one-year period? (Round your answer to one decimal place.)
Solutions
orchestra answered 1 year agoRelated Solutions
A travel association reported the domestic airfare (in dollars) for business travel for the current year...
A travel association reported the domestic airfare (in dollars)
for business travel for the current year and the previous year.
Below is a sample of 12 flights with their domestic airfares shown
for both years.
Current
Year
Previous
Year
345
315
526
451
420
450
216
206
285
263
405
432
635
585
710
650
605
545
517
547
570
508
610
580
(a)Formulate the hypotheses and test for a significant increase
in the mean domestic airfare for business travel...
A travel association reported the domestic airfare (in dollars) for business travel for the current year...
A travel association reported the domestic airfare (in dollars)
for business travel for the current year and the previous year.
Below is a sample of 12 flights with their domestic airfares shown
for both years.
Current
Year
Previous
Year
345
315
526
451
420
474
216
206
285
275
405
432
635
585
710
650
605
545
517
547
570
508
610
580
(a)
Formulate the hypotheses and test for a significant increase in
the mean domestic airfare for business...
A travel association reported the domestic airfare (in dollars) for business travel for the current year...
A travel association reported the domestic airfare (in dollars)
for business travel for the current year and the previous year.
Below is a sample of 12 flights with their domestic airfares shown
for both years.
Current
Year
Previous
Year
345
315
526
475
420
474
216
206
285
275
405
432
635
585
710
650
605
545
517
547
570
508
610
580
(a)
Formulate the hypotheses and test for a significant increase in
the mean domestic airfare for business...
The domestic airfare for business travel for the current year and the previous year was reported....
The domestic airfare for business travel for the current year
and the previous year was reported. A sample of 12 flights with
their domestic airfares shown for both years is contained in the
Excel Online file below. Construct a spreadsheet to answer the
following questions.
Current Year
Previous Year
552
399
447
498
525
543
480
312
555
588
537
243
384
342
420
288
387
411
315
450
249
498
345
486
a. Formulate the hypotheses and test for...
According to a national business travel association a 2010 survey, the average salary of a travel...
According to a national business travel association a 2010
survey, the average salary of a travel management professional is
$96,850. Assume that the standard deviation of such salaries is
$30,000. Consider a random sample of 50 travel management
professionals and let Xbar represent the mean salary for the
sample.
A. What is u xbar.
B. What is Standard deviation of x bar.
C. Describe the shape of the distribution.
D. Find the z-score for the value of xbar= 89,500
E....
The accompanying data represent the total travel tax (in dollars) for a 3-day business trip in...
The accompanying data represent the total travel tax (in
dollars) for a 3-day business trip in 8 randomly selected cities.
A normal probability plot suggests the data could come from a
population that is normally distributed. A boxplot indicates there
are no outliers. Complete parts (a) through (c) below.
67.62, 78.84, 69.99, 84.05, 79.24, 85.82, 100.26, 98.34
(a) Determine a point estimate for the population mean travel
tax. A point estimate for the population mean travel tax is $
nothing...
The accompanying data represent the total travel tax (in dollars) for a 3-day business trip in...
The accompanying data represent the total travel tax (in
dollars) for a 3-day business trip in 8 randomly selected cities.
A normal probability plot suggests the data could come from a
population that is normally distributed. A boxplot indicates there
are no outliers. Complete parts (a) through (c) below.
68.43
78.73
69.41
84.89
79.03
87.78
101.73
98.75
(a) Determine a point estimate for the population mean travel
tax.
A point estimate for the population mean travel tax is $___
(Round...
The accompanying data represent the total travel tax (in dollars) for a 3-day business trip in...
The accompanying data represent the total travel tax (in
dollars) for a 3-day business trip in 8 randomly selected cities.
A normal probability plot suggests the data could come from a
population that is normally distributed. A boxplot indicates there
are no outliers. Complete parts (a) through (c) below.
68.75 79.27 69.24 84.12 80.78 86.19 100.66 99.24
(a) Determine a point estimate for the population mean travel
tax. A point estimate for the population mean travel tax is $____
(Round...
The accompanying data represent the total travel tax (in dollars) for a 3-day business trip in...
The accompanying data represent the total travel tax (in
dollars) for a 3-day business trip in 88 randomly selected cities.
A normal probability plot suggests the data could come from a
population that is normally distributed. A boxplot indicates there
are no outliers. Complete parts (a) through (c) below. 67.95
79.24 69.64 84.47 79.49 87.04 100.95 97.04
(a) Determine a point estimate for the population mean travel
tax.
(b) Construct and interpret a 95% confidence interval for the mean
tax...
The accompanying data represent the total travel tax (in dollars) for a 3-day business trip in...
The accompanying data represent the total travel tax (in
dollars) for a 3-day business trip in 8 randomly selected cities.
A normal probability plot suggests the data could come from a
population that is normally distributed. A boxplot indicates there
are no outliers. Complete parts (a) through (c) below. 68.12
79.32 68.56 84.72 79.34 86.19 100.95 98.55 LOADING... Click the
icon to view the table of critical t-values. (a) Determine a
point estimate for the population mean travel tax. A...
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