n = 0 PN (n) = {0.3 n = 1,2, 3 O therwise 0.1 Voice calls cost 25 cents each and data calls cost 40 cents each. T cents is the cost of the three telephone calls monitored in the experiment. (a) Express T as a function of N. (b) Find Pr(t) and E[T]. Ans. A) T = 120 – 15N B) P„(t) = 0.3 (t = 15, 90, 105); 0.1 (t = 120); 0 otherwise; E[T] = 93 cents

n = 0 PN (n) = {0.3 n = 1,2, 3 O therwise 0.1 Voice calls cost 25 cents each and data calls cost 40 cents each. T cents is the cost of the three telephone calls monitored in the experiment. (a) Express T as a function of N. (b) Find Pr(t) and E[T]. Ans. A) T = 120 – 15N B) P„(t) = 0.3 (t = 15, 90, 105); 0.1 (t = 120); 0 otherwise; E[T] = 93 cents

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section: Chapter Questions

Problem 8CR

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