The Airline Passenger Association studied the relationship between the number of passengers on a particular flight...
|
The Airline Passenger Association studied the relationship between the number of passengers on a particular flight and the cost of the flight. It seems logical that more passengers on the flight will result in more weight and more luggage, which in turn will result in higher fuel costs. For a sample of 25 flights, the correlation between the number of passengers and total fuel cost was 0.672. |
| (1) |
State the decision rule for 0.05 significance level: H0: ρ ≤ 0; H1: ρ > 0 (Round your answer to 3 decimal places.) |
| Reject H0 if t > |
| (2) |
Compute the value of the test statistic. (Round your answer to 3 decimal places.) |
| Value of the test statistic |
| (3) | Can we conclude that the correlation in the population is greater than zero? Use the 0.05 significance level |
| (Reject, Do not reject)
H0 . It is (reasonable, not
reasonable) to conclude that there is positive association in
the population between the two variables. |
Homework Answers
Add Answer to:
The Airline Passenger Association studied the relationship
between the number of passengers on a particular flight...
The Airline Passenger Association studied the relationship between the number of passengers on a particular flight...
The Airline Passenger Association studied the relationship between the number of passengers on a particular flight and the cost of the flight. It seems logical that more passengers on the flight will result in more weight and more luggage, which in turn will result in higher fuel costs. For a sample of 22 flights, the correlation between the number of passengers and total fuel cost was 0.640. 1. State the decision rule for 0.050 significance level: H0: ρ ≤ 0;...
The Airline Passenger Association studied the relationship between the number of passengers on a particular flight...
The Airline Passenger Association studied the relationship between the number of passengers on a particular flight and the cost of the flight. It seems logical that more passengers on the flight will result in more weight and more luggage, which in turn will result in higher fuel costs. For a sample of 20 flights, the correlation between the number of passengers and total fuel cost was 0.688. (1) State the decision rule for 0.02 significance level: H0: ρ ≤ 0;...
A study of 18 worldwide financial institutions showed the correlation between their assets and pretax profit...
A study of 18 worldwide financial institutions showed the correlation between their assets and pretax profit to be 0.79. Can we conclude that there is a positive correlation between assets and pretax profit? 1-b. State the decision rule for 0.10 significance level: H0: ρ ≤ 0; H1: ρ > 0. (Round your answer to 3 decimal places.) Reject H0 if t > 2. Compute the value of the test statistic. (Round your answer to 2 decimal places.) 3. Can we...
(1 point) An airline has determined that the relationship between the number of passengers on a...
(1 point) An airline has determined that the relationship between the number of passengers on a flight and the total weight of luggage stored in the baggage compartment can be estimated by the least squares regression equation y= 220 + 24x. Predict the weight of luggage for a flight with 129 passengers Answer: nounds
In the airline business, "on-time" flight arrival is important for connecting flights and general...
In the airline business, "on-time" flight arrival is important for connecting flights and general customer satisfaction. Is there a difference between summer and winter average on-time flight arrivals? Let x1 be a random variable that represents percentage of on-time arrivals at major airports in the summer. Let x2 be a random variable that represents percentage of on-time arrivals at major airports in the winter. A random sample of n1 = 16 major airports showed that x1 = 74.2%, with s1...
A magazine subscriber study asked, "In the past 12 months, when traveling for business, what type...
A magazine subscriber study asked, "In the past 12 months, when traveling for business, what type of airline ticket did you purchase most often?" A second question asked if the type of airline ticket purchased most often was for domestic or international travel. Sample data obtained are shown in the following table. Type of Ticket Type of Flight Domestic International First class 29 22 Business class 96 122 Economy class 517 134 (a) Using a 0.05 level of significance, is...
A study of 20 worldwide financial institutions showed the correlation between their assets and pretax profit...
A study of 20 worldwide financial institutions showed the correlation between their assets and pretax profit to be 0.86. (1) State the decision rule for 0.05 significance level: H0: ρ ≤ 0; H1: ρ > 0. (Round your answer to 3 decimal places.) Reject H0 if t > (2) Compute the value of the test statistic. (Round your answer to 3 decimal places.) Value of the test statistic
For a sample of 40 large U.S. cities, the correlation between the mean number of square...
For a sample of 40 large U.S. cities, the correlation between the mean number of square feet per office worker and the mean monthly rental rate in the central business district is -0.363. State the decision rule for 05 significance level: Hop: 0; Hi:p<0 (Negative value should be indicated by a minus sign. Round your answer to 3 decimal places.) Reject Ho ift< Compute the value of the test statistic. (Negative value should be indicated by a minus sign. Round...
You may need to use the appropriate technology to answer this question. Researchers at two universities found that airlines are doing a better job of getting passengers to their destinations on time....
You may need to use the appropriate technology to answer this question. Researchers at two universities found that airlines are doing a better job of getting passengers to their destinations on time. Company A and Company B Airlines were among the leaders in on-time arrivals with both having 88% of their flights arriving on time. But for the 12% of flights that were delayed, how many minutes were these flights late? Sample data showing the number of minutes that delayed...
Expedia would like to test the hypothesis that the average roundtrip airfare between Philadelphia and Paris...
Expedia would like to test the hypothesis that the average roundtrip airfare between Philadelphia and Paris is higher for a flight originating in Philadelphia when compared to a flight originating in Paris. The following data summarizes the sample statistics for roundtrip flights originating in both cities. Assume that the population variances are equal. Originating City Philadelphia Paris Sample mean $1,240 $1,060 Sample size 15 19 Sample standard deviation $270 $240 If Population 1 is defined as flights originating in Philadelphia...
(1 point) An airline has determined that the relationship between the number of passengers on a flight and the total weight of luggage stored in the baggage compartment can be estimated by the least squares regression equation y= 220 + 24x. Predict the weight of luggage for a flight with 129 passengers Answer: nounds
For a sample of 40 large U.S. cities, the correlation between the mean number of square feet per office worker and the mean monthly rental rate in the central business district is -0.363. State the decision rule for 05 significance level: Hop: 0; Hi:p<0 (Negative value should be indicated by a minus sign. Round your answer to 3 decimal places.) Reject Ho ift< Compute the value of the test statistic. (Negative value should be indicated by a minus sign. Round...
Most questions answered within 3 hours.
-
A coach uses a new technique to train gymnasts. Seven
gymnasts were randomly selected and their...
asked 47 minutes ago -
While rotating the tires on your car you notice a rock [mass =
0.1 Kg] stuck...
asked 2 hours ago -
Using MARS simulator, write MIPS programs according to
the following scenarios: Receive a positive integer number...
asked 4 hours ago -
An object in front of a concave mirror has a real image that is
11.5 cm...
asked 4 hours ago -
Consider the reaction, C3 H8 + O2 --> CO2 + H2O. How many
moles of O2...
asked 6 hours ago -
You and your opponent both roll a fair die. If you both roll the
same number,...
asked 6 hours ago -
In a study of the accuracy of fast food drive-through orders,
Restaurant A had 257 accurate...
asked 6 hours ago -
Identify and describe in detail the four categories of
institutions that could be included in a...
asked 6 hours ago -
In python
class Customer:
def __init__(self, customer_id, last_name, first_name, phone_number, address):
self._customer_id = int(customer_id)
self._last_name =...
asked 7 hours ago -
What is an example of a limitation in implementing a new
ERP system and how it...
asked 7 hours ago -
In a section of 9.7cm of an artery with a radius of 2.6mm there
is a...
asked 7 hours ago -
the two carboxylic acid groups of aspartic acid have different
acidities with pKa values of 2.1...
asked 7 hours ago