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Telephone calls enter a college switchboard on the average of two every three mimutes. The probability that 5 or more calls arriving in a 6-minute period is equal: O 0.9004 O 0.564 O 0.715 O 0.371

Telephone calls enter a college switchboard on the average of two every three mimutes. The probability that 5 or more calls arriving in a 6-minute period is equal: O 0.9004 O 0.564 O 0.715 O 0.371

College Algebra (MindTap Course List)
College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter8: Sequences, Series, And Probability
Section8.7: Probability
Problem 39E: Assume that the probability that an airplane engine will fail during a torture test is 12and that...
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Telephone calls enter a college switchboard on the average of two every three minutes. The probability that 5 or more calls arriving in a 6-minute period is equal: 0.9004 0.564 0.715 0.371
Transcribed Image Text:Telephone calls enter a college switchboard on the average of two every three minutes. The probability that 5 or more calls arriving in a 6-minute period is equal: 0.9004 0.564 0.715 0.371
Suppose X, Y are two discrete random variables with probability function given by: Y \ X |1 -1 -1 1/9 2/9 1/9 2/9 1/9 1/9 1/9 Then X and Y are: Independent Dependent Question * The time taken by a student to finish a statistics exam can be modeled using the following cumulative distribution function: F(x) = 1-e-0.9x, x > 0 Suppose that the time taken for a student to finish the exam is constant from student to student. Then the mean number (to the nearest whole number) of students who will finish the exam in less than 1 hour for 12 students randomly selected is equal to: None of the other options O 7 8.
Transcribed Image Text:Suppose X, Y are two discrete random variables with probability function given by: Y \ X |1 -1 -1 1/9 2/9 1/9 2/9 1/9 1/9 1/9 Then X and Y are: Independent Dependent Question * The time taken by a student to finish a statistics exam can be modeled using the following cumulative distribution function: F(x) = 1-e-0.9x, x > 0 Suppose that the time taken for a student to finish the exam is constant from student to student. Then the mean number (to the nearest whole number) of students who will finish the exam in less than 1 hour for 12 students randomly selected is equal to: None of the other options O 7 8.
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