Jacob Lee is a frequent traveler between Los Angeles and San Diego. For the past month,...
Jacob Lee is a frequent traveler between Los Angeles and San Diego. For the past month, he wrote down the flight times in minutes on three different airlines. The results are:
| Goust | Jet Red | Cloudtran |
| 51 | 50 | 52 |
| 51 | 53 | 55 |
| 52 | 52 | 60 |
| 42 | 62 | 64 |
| 51 | 53 | 61 |
| 57 | 49 | 49 |
| 47 | 50 | 49 |
| 47 | 49 | |
| 50 | 58 | |
| 60 | 54 | |
| 54 | 51 | |
| 49 | 49 | |
| 48 | 49 | |
| 48 | 50 | |
1. Null hypothesis:
2. Alternate hypothesis:
3. State the decision rule for 0.05 significance level.
4. Develop a 95% confidence interval for the difference in the means between Goust and Cloudtran.
Homework Answers
using minitab>Stat>ANOVA >one way ANOVA
we have
One-way ANOVA: Goust, Jet Red, Cloudtran
Method
Null hypothesis All means are equal
Alternative hypothesis At least one mean is different
Significance level α = 0.05
Rows unused 6
Equal variances were assumed for the analysis.
Factor Information
Factor Levels Values
Factor 3 Goust, Jet Red, Cloudtran
Analysis of Variance
Source DF Adj SS Adj MS F-Value P-Value
Factor 2 127.1 63.56 3.04 0.062
Error 32 669.9 20.93
Total 34 797.0
Model Summary
S R-sq R-sq(adj) R-sq(pred)
4.57526 15.95% 10.70% 0.00%
Means
Factor N Mean StDev 95% CI
Goust 14 50.50 4.47 (48.01, 52.99)
Jet Red 14 52.07 3.83 (49.58, 54.56)
Cloudtran 7 55.71 6.05 (52.19, 59.24)
Pooled StDev = 4.57526
Tukey Pairwise Comparisons
Grouping Information Using the Tukey Method and 95% Confidence
Factor N Mean Grouping
Cloudtran 7 55.71 A
Jet Red 14 52.07 A B
Goust 14 50.50 B
Means that do not share a letter are significantly different.
Tukey Simultaneous Tests for Differences of Means
Difference SE of Adjusted
Difference of Levels of Means Difference 95% CI T-Value
P-Value
Jet Red - Goust 1.57 1.73 (-2.68, 5.83) 0.91 0.639
Cloudtran - Goust 5.21 2.12 ( 0.00, 10.43) 2.46 0.050
Cloudtran - Jet Red 3.64 2.12 (-1.57, 8.85) 1.72 0.213
Individual confidence level = 98.06%
1. the Null hypothesis : 
2. Alternate hypothesis: At least one mean is different
3. since p value of F stat is 0.062 which is greater than 0.05 so we dont reject Ho and conclude All means are equal
4. a 95% confidence interval for the difference in the means between Goust and Cloudtran. is (-10.43 , 0.00)
Add Answer to:
Jacob Lee is a frequent traveler between Los Angeles and San
Diego. For the past month,...
You normally drive on the freeway between San Diego and Los Angeles at an average speed...
You normally drive on the freeway between San Diego and Los Angeles at an average speed of 87 km/h (54 mi/h), and the trip takes 2 h and 49 min. On a Friday afternoon, however, heavy traffic slows you down and you drive the same distance at an average speed of only 62 km/h (39 mi/h). How much longer does the trip take?
estimate the average age at which multiple sclerosis patients were diagnosed with the condition for the...
estimate the average age at which multiple sclerosis patients were diagnosed with the condition for the first time in a given city. How big should the sample be? Define your procedures for this estimate (if necessary, set your own values of unknown parameters, based on statistical theory). In Table 1 you will find all ages of this patient population. 54 58 56 48 62 59 55 56 60 52 53 61 56 56 53 37 71 62 39 61 54...
Exercise 2.3 Constants Part A You normally drive on the freeway between San Diego and Los...
Exercise 2.3 Constants Part A You normally drive on the freeway between San Diego and Los Angeles at an average speed of 105 km/h (65 mi/h), and the trip takes 1 h and 50 min, On a Friday afternoon, however, heavy traffic slows you down and you drive the same distance at an average speed of only 69.0 km/h (43 mi/h How much longer does the trip take? Express your answer using three significant figures. min Submit Request Answer Provide...
NUMBER OF PEOPLE 10.2 10.0 10.1 8.5 10.2 8.2 8 Source: United States Census. 11. In...
NUMBER OF PEOPLE 10.2 10.0 10.1 8.5 10.2 8.2 8 Source: United States Census. 11. In the Sanitary District of Chicago, operating engineers are hired on of a competitive civil-service examination. In 1966, there were 223 appl for 15 jobs. The exam was held on March 12; the test scores are s arranged in increasing order. The height of each bar in the histogram next page) shows the number of people with the correspondin examiners were charged with rigging the...
3. A hospital administrator wished to study the relation between patient satisfaction (Y) and pat...
solvel only E F G H
below is pat data
3. A hospital administrator wished to study the relation between patient satisfaction (Y) and patients age (Xi, in years), severity of illness (X2, an index) and anxiety level (X3, an index). The administrator randomly selected 23 patients and collected the data in pat, where larger values of Y, X2 and X3 are, respectively, associated with more satisfaction, increased severity of illness and more anxiety. The data is saved in Moodle2...
For determining half-lives of radioactive isotopes, it is important to know what the background radiation is...
For determining half-lives of radioactive isotopes, it is important to know what the background radiation is in a given detector over a specific period. The following data were taken in a y -ray detection experiment over 98 ten-second intervals: 58 50 57 58 64 63 54 64 59 41 43 56 60 50 46 59 54 60 59 60 67 52 65 63 55 61 68 58 63 36 42 54 58 54 40 60 64 56 61 51 48...
Consider the below matrixA, which you can copy and paste directly into Matlab.
Problem #1: Consider the below matrix A, which you can copy and paste directly into Matlab. The matrix contains 3 columns. The first column consists of Test #1 marks, the second column is Test # 2 marks, and the third column is final exam marks for a large linear algebra course. Each row represents a particular student.A = [36 45 75 81 59 73 77 73 73 65 72 78 65 55 83 73 57 78 84 31 60 83...
Problem 4: Variables that may affect Grades The data set contains a random sample of STAT 250 Final Exam Scores out of 80 points. For each individual sampled, the time (in hours per week) that the stu...
Problem 4: Variables that may affect Grades The data set contains a random sample of STAT 250 Final Exam Scores out of 80 points. For each individual sampled, the time (in hours per week) that the student spent participating in a GMU club or sport and working for pay outside of GMU was recorded. Values of 0 indicate the students either does not participate in a club or sport or does not work a job for pay. The goal of...
Problem 1: Confidence Interval for Percentage of B’s. The data set “STAT 250 Final Exam Scores”...
Problem 1: Confidence Interval for Percentage of B’s. The data set “STAT 250 Final Exam Scores” contains a random sample of 269 STAT 250 students’ final exam scores (maximum of 80) collected over the past two years. Answer the following questions using this data set. a) What proportion of students in our sample earned B’s on the final exam? A letter grade of B is obtained with a score of between 64 and 71 inclusive. Hint: You can do this...
The accompanying computer excel output (please see attachment on Blackboard) provides details of data and analysis...
The accompanying computer excel output
(please see attachment on Blackboard) provides details of data and
analysis on the topic of “patient satisfaction”. A hospital
administrator wished to study the relation between patient
satisfaction (Y) and patients’ age (X1, in years) , severity of
illness (X2), and anxiety level (X3).
The output includes a listing of all
46 observations; descriptive statistics for each variable; and, the
results of a regression analysis that uses patient satisfaction as
the dependent variable, and patient’s...
Exercise 2.3 Constants Part A You normally drive on the freeway between San Diego and Los Angeles at an average speed of 105 km/h (65 mi/h), and the trip takes 1 h and 50 min, On a Friday afternoon, however, heavy traffic slows you down and you drive the same distance at an average speed of only 69.0 km/h (43 mi/h How much longer does the trip take? Express your answer using three significant figures. min Submit Request Answer Provide...
NUMBER OF PEOPLE 10.2 10.0 10.1 8.5 10.2 8.2 8 Source: United States Census. 11. In the Sanitary District of Chicago, operating engineers are hired on of a competitive civil-service examination. In 1966, there were 223 appl for 15 jobs. The exam was held on March 12; the test scores are s arranged in increasing order. The height of each bar in the histogram next page) shows the number of people with the correspondin examiners were charged with rigging the...
solvel only E F G H
below is pat data
3. A hospital administrator wished to study the relation between patient satisfaction (Y) and patients age (Xi, in years), severity of illness (X2, an index) and anxiety level (X3, an index). The administrator randomly selected 23 patients and collected the data in pat, where larger values of Y, X2 and X3 are, respectively, associated with more satisfaction, increased severity of illness and more anxiety. The data is saved in Moodle2...
For determining half-lives of radioactive isotopes, it is important to know what the background radiation is in a given detector over a specific period. The following data were taken in a y -ray detection experiment over 98 ten-second intervals: 58 50 57 58 64 63 54 64 59 41 43 56 60 50 46 59 54 60 59 60 67 52 65 63 55 61 68 58 63 36 42 54 58 54 40 60 64 56 61 51 48...
The accompanying computer excel output
(please see attachment on Blackboard) provides details of data and
analysis on the topic of “patient satisfaction”. A hospital
administrator wished to study the relation between patient
satisfaction (Y) and patients’ age (X1, in years) , severity of
illness (X2), and anxiety level (X3).
The output includes a listing of all
46 observations; descriptive statistics for each variable; and, the
results of a regression analysis that uses patient satisfaction as
the dependent variable, and patient’s...
Most questions answered within 3 hours.
-
Bank of America has bonds that pay a coupon interest rate of 5.5
percent and mature...
asked 5 minutes ago -
Problem: Patient Fees C++
You are to write a program that computes a patient’s bill for...
asked 1 hour ago -
In a population of interest, we know that, 77% drink coffee, and
23% drink tea. Assume...
asked 2 hours ago -
Given that f(x) = e-(x-1) for x > 1, determine the following
probabilities:
a) P(X <...
asked 1 hour ago -
A mechanic pushes a 2.60 ✕ 103-kg car from rest to a speed of v,
doing...
asked 1 hour ago -
International information systems result in all of the following
except:
A. improved quality of information flow....
asked 1 hour ago -
The president of the retailer Prime Products has just approached
the company’s bank with a request...
asked 1 hour ago -
If the carrying amount is $200,000 and recoverable amount is
$205000, the impairment amount is:
Select...
asked 1 hour ago -
The correlation is inappropriate as a measure of association
between two quantitative variables (you may select...
asked 2 hours ago -
USE THE DATA IN THE TABLE BELOW TO ANSWER QUESTIONS 19 – 24
(Assume all account...
asked 2 hours ago -
Mahaley, Inc., manufactures and sells two products: Product Q9
and Product F0. Data concerning the expected...
asked 2 hours ago -
To measure the current through one branch of a parallel circuit,
the meter is connected ________....
asked 2 hours ago