Table 2.1 shows the classification of 50 students according to their gender and their time spent on watching Netfree in a week during semester break. Table 2.1 Time spent on watching Netfree At least 25 hours (N) Less than 25 hours (L) Male (M) Female (F) 15 8 10 17 Calculate the probability that a randomly selected student is a female or spent less than 25 hours on watching Netfree. (i) (ii) Find the probability that a randomly selected male student spent at least 25 hours on watching Netfree. Two students are randomly selected from the 50 students without replacement. Find the probability that at least one ofthem spent less than 25 hours on watching Netfree. (iii)

Table 2.1 shows the classification of 50 students according to their gender and their time spent on watching Netfree in a week during semester break. Table 2.1 Time spent on watching Netfree At least 25 hours (N) Less than 25 hours (L) Male (M) Female (F) 15 8 10 17 Calculate the probability that a randomly selected student is a female or spent less than 25 hours on watching Netfree. (i) (ii) Find the probability that a randomly selected male student spent at least 25 hours on watching Netfree. Two students are randomly selected from the 50 students without replacement. Find the probability that at least one ofthem spent less than 25 hours on watching Netfree. (iii)

Algebra & Trigonometry with Analytic Geometry

13th Edition

ISBN:9781133382119

Author:Swokowski

Publisher:Swokowski

Chapter10: Sequences, Series, And Probability

Section10.8: Probability

Problem 31E

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