Students are going to write a test. Students are allowed to bring sheets with formulas. There are 4 types of sheets with formulas: A, B, C, D Probability of student's success with formulas: A is 0,3 - brings 45% of students B is 0,2 - brings 20% of students C is 0,1 - brings 20% of students D is 0,9 - brings 15% of students 1. We randomly selected a student. What is the probability that he brings sheet D? 2. From students with A sheets we have chosen 10 students. What is the probability that 9 or 10 of them passed the exam?

Students are going to write a test. Students are allowed to bring sheets with formulas. There are 4 types of sheets with formulas: A, B, C, D Probability of student's success with formulas: A is 0,3 - brings 45% of students B is 0,2 - brings 20% of students C is 0,1 - brings 20% of students D is 0,9 - brings 15% of students 1. We randomly selected a student. What is the probability that he brings sheet D? 2. From students with A sheets we have chosen 10 students. What is the probability that 9 or 10 of them passed the exam?

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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