High levels of cockpit noise in an aircraft can damage the hearing of pilots who are exposed to this hazard for many hours. Cockpit noise in a jet aircraft is mostly due to airflow at hundreds of miles per hour. This 3 x 3 contingency table shows 61 observations of data collected by an airline pilot using a handheld sound meter in a certain aircraft cockpit. Noise level is defined as "low" (under 88 decibels), "medium" (88 to 91 decibels), or "high" (92 decibels or more). There are three flight phases (climb, cruise, descent). Noise Level Low (L) Medium (M) High (H) Column Total i P(B) ii P(L) iP(HIC) Cockpit Noise iv P(HID) V P(L and B) vi P(L and C) Flight Phase Climb Cruise (B) (C) 7 17 6 30 6 3 2 11 Click here for the Excel Data File (a) Calculate the following probabilities: (Round your answers to 4 decimal places.) Descent (D) 7 3 10 20 0.4918 Row Total 20 23 18 61
High levels of cockpit noise in an aircraft can damage the hearing of pilots who are exposed to this hazard for many hours. Cockpit noise in a jet aircraft is mostly due to airflow at hundreds of miles per hour. This 3 x 3 contingency table shows 61 observations of data collected by an airline pilot using a handheld sound meter in a certain aircraft cockpit. Noise level is defined as "low" (under 88 decibels), "medium" (88 to 91 decibels), or "high" (92 decibels or more). There are three flight phases (climb, cruise, descent). Noise Level Low (L) Medium (M) High (H) Column Total i P(B) ii P(L) iP(HIC) Cockpit Noise iv P(HID) V P(L and B) vi P(L and C) Flight Phase Climb Cruise (B) (C) 7 17 6 30 6 3 2 11 Click here for the Excel Data File (a) Calculate the following probabilities: (Round your answers to 4 decimal places.) Descent (D) 7 3 10 20 0.4918 Row Total 20 23 18 61
A First Course in Probability (10th Edition)
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ISBN:9780134753119
Author:Sheldon Ross
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Chapter1: Combinatorial Analysis
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Transcribed Image Text:High levels of cockpit noise in an aircraft can damage the hearing of pilots who are exposed to this hazard for many hours. Cockpit
noise in a jet aircraft is mostly due to airflow at hundreds of miles per hour. This 3 x 3 contingency table shows 61 observations of data
collected by an airline pilot using a handheld sound meter in a certain aircraft cockpit. Noise level is defined as "low" (under 88
decibels), "medium" (88 to 91 decibels), or "high" (92 decibels or more). There are three flight phases (climb, cruise, descent).
Noise Level
Low (L)
Medium (M)
High (H)
Column Total
Cockpit Noise
i P(B)
ii P(L)
iii P(H|C)
iv P(HID)
v P(L and B)
vi P(L and C)
Climb
(B)
7
17
6
30
Flight Phase
Cruise Descent
(C)
(D)
6
7
3
3
2
11
10
20
Click here for the Excel Data File
(a) Calculate the following probabilities: (Round your answers to 4 decimal places.)
0.4918
Row Total
20
23
18
61
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