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 da 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). Cockpit Noise Flight Phase Cruise (C) Noise Level CLimb (B) Descent (D) ROw Total Low (L) Medium (M) High (H) 2. 4 14 17 31 21 11 16 Column TotaL 27 13 21 61 Click here for the Excel Data File (a) Calculate the following probabilities: (Round your answers to 4 declmal places.) P(B) H.P(L) P(H|C) 0.4426 0.2205 0.2308 iv. P(HID) V. P(L and B) vi. P(L and C) (b) Do you see evidence that noise level depends on flight phase? O Yes O No

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 da 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). Cockpit Noise Flight Phase Cruise (C) Noise Level CLimb (B) Descent (D) ROw Total Low (L) Medium (M) High (H) 2. 4 14 17 31 21 11 16 Column TotaL 27 13 21 61 Click here for the Excel Data File (a) Calculate the following probabilities: (Round your answers to 4 declmal places.) P(B) H.P(L) P(H|C) 0.4426 0.2205 0.2308 iv. P(HID) V. P(L and B) vi. P(L and C) (b) Do you see evidence that noise level depends on flight phase? O Yes O No

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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