23. Two fair dice are tossed. Both numbers are added up. Show that the probability of getting a sum of seven is . A pair of dice is tossed 100 times and the sum is observed on each occasion. What is the probability of getting more than 25 occasions where the sum is seven? How many tosses would be required in order that the probability of getting at least one seven is 0.9 or more?

23. Two fair dice are tossed. Both numbers are added up. Show that the probability of getting a sum of seven is . A pair of dice is tossed 100 times and the sum is observed on each occasion. What is the probability of getting more than 25 occasions where the sum is seven? How many tosses would be required in order that the probability of getting at least one seven is 0.9 or more?

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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