An airline wishes to choose between two alternative methods for evacuating its aircraft in the event...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
An airline wishes to choose between two alternative methods for evacuating its aircraft in the event of an emergency. One major concern is the evacuation time. In a study, an evacuation simulation was performed 10 times, 5 times using Method A and 5 times using Method B. The evacuation times of each method were as given below. Evacuation Time (seconds) Method A 61 59 67 40 83 Method B 63 69 77 54 87 (a) Use an independent samples tt-test to test whether or not there is a significant difference between the evacuation times of the two methods. (b) What assumptions, if any, do you need to make for the above test to be the correct test to use? (c) Suppose that five aircrews were involved in the study. Each aircrew performed two evacuation simulations, one of each method. Each column now represents a pair of Method A and B evacuation times for each of the five aircrews. For example, the first evacuation time for method A (i.e. 61) and the first evacuation time for method B (i.e. 63) were conducted by the first aircrew, and so on. Revise your statistical test and your conclusions in the light of this new information. State clearly any additional assumptions that you need to make. An airline wishes to choose between two alternative methods for evacuating its aircraft in the event of an emergency. One major concern is the evacuation time. In a study, an evacuation simulation was performed 10 times, 5 times using Method A and 5 times using Method B. The evacuation times of each method were as given below. Evacuation Time (seconds) Method A 61 59 67 40 83 Method B 63 69 77 54 87 (a) Use an independent samples tt-test to test whether or not there is a significant difference between the evacuation times of the two methods. (b) What assumptions, if any, do you need to make for the above test to be the correct test to use? (c) Suppose that five aircrews were involved in the study. Each aircrew performed two evacuation simulations, one of each method. Each column now represents a pair of Method A and B evacuation times for each of the five aircrews. For example, the first evacuation time for method A (i.e. 61) and the first evacuation time for method B (i.e. 63) were conducted by the first aircrew, and so on. Revise your statistical test and your conclusions in the light of this new information. State clearly any additional assumptions that you need to make.
Expert Answer:
Related Book For
Posted Date:
Students also viewed these mathematics questions
-
A mixture initially consisting of 2 mol CO and 2 mol H2 comes to equilibrium with methanol, CH3OH, as the product: At equilibrium, the mixture will contain which of the following? a. less than 1 mol...
-
A constant volume tank contains a mixture of 1 kmol of benzene (C6H6) gas and 20% excess air at 25oC and 1 atm. The contents of the tank are now ignited, and all hydrogen in the fuel burns to H2O but...
-
A constant volume tank contains a mixture of 150 g of methane (CH4) gas and 750 g air at 25oC, 150 kPa. The contents of the tank are now ignited, and the methane gas burns completely. If the final...
-
In Problems 5994, solve each inequality. Express your answer using set notation or interval notation. Graph the solution set. 2x2 3 + x
-
Now assume the entity is a partnership named Lifecycle Partnership. Additional facts are as follows: Except for precontribution gains and losses, the partners agree to share profits and losses in a...
-
This exercise looks into the relationship between clauses and implication sentences. a. Show that the clause (P1 V . . . V Pm VQ) iS logically equivalent to the implication sentence (P1 . . . Pm)...
-
The sky hook is used to support the cable of a scaffold over the side of a building. If it consists of a smooth rod that contacts the parapet of a wall at points A, B, and C, determine the normal...
-
Liz and John formed the equal LJ Partnership on January 1 of the current year. Liz contributed $80,000 of cash and land with a fair market value of $90,000 and an adjusted basis of $75,000. John...
-
4. Solve and find an explicit solution to (x+2)2y+8y=5-4xy. dy da
-
Managers often assume a strictly linear relationship between cost and the level of activity. Under what conditions would this be a valid or invalid assumption?
-
Find bace of sigmaX sigmaY sigmaX sigmaZ sigmaY sigmaX .
-
How are budgets prepared for other reasons other than projecting income statement and balance sheet account balances?
-
What is the capital for July 1 for the Ststement of Owner's Equity?
-
What are some costs of quality positive and negative ? Please share examples.
-
Explain how forensic accountants can use the so called COFEE device?
-
What is meant by the term "double taxation" as applied to the corporate form of business organization? Explain.
-
18. Answer the following questions about adjusting tamping technique. a) Briefly explain how adjusting the tamping technique could impact the quality of the espresso coffee. b) Briefly explain when...
-
Havel says the grocer doesnt believe what is on the sign and indeed, he says the grocers customers will barely notice it. But Havel maintains that the sign serves a specific function. How would you...
-
Describe the bonding in the O3 molecule and the NO2- ion using the LE model. How would the molecular orbital model describe the bonding in these two species?
-
For which reactions in Exercise 19 is Kp equal to K? Exercise 19: a. 2NH3(g) + CO2(g) N2CH4O(s) + H2O(g) b. 2NBr3(s) N2(g) + 3Br2(g) c. 2KClO3(s) 2KCl(s) + 3O2(g) d. CuO(s) + H2(g) Cu(l) + H2O(g)
-
Given the following equilibrium constants at 427oC, Na2O(s) 2Na(l) + 12 O2(g) K1 = 2 10-25 NaO(g) Na(l) + l2 O2(g) K2 = 2 10-5 Na2O2(s) 2Na(l) + O2(g) K3 = 5 10-29 NaO2(s) Na(l) + O2(g) K4 = 3...
-
Use the internet to identify all the infrastructure projects currently taking place in your local area. How many are you able to find? What is the value of the projects? How long are they planned to...
-
Review the PMI site (www.pmi.org). (a) Review general information about the PMI, as well as membership information. (b) See if there is a PMI chapter in your state. If not, where is the closest one?...
-
Individually identify a recent project. Are both socio-cultural and technical elements factors in the success or difficulties in the projects?
Study smarter with the SolutionInn App