a) Let the event E be the sum of a pair of dice that is greater than 11. List the events in EC. b) Julia sets up a passcode on her smart phone, which allows only four-digit codes. A spy sneaks a look at Julia's smart phone and sees her fingerprints on the screen over four numbers. What is the probability the spy is able to unlock the smart phone on his first try? Express your answer as a fraction in lowest terms or a decimal rounded to the nearest millionth.

a) Let the event E be the sum of a pair of dice that is greater than 11. List the events in EC. b) Julia sets up a passcode on her smart phone, which allows only four-digit codes. A spy sneaks a look at Julia's smart phone and sees her fingerprints on the screen over four numbers. What is the probability the spy is able to unlock the smart phone on his first try? Express your answer as a fraction in lowest terms or a decimal rounded to the nearest millionth.

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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Concept explainers

Counting Principles

In statistics, the counting principle can be said to be the concept in which the quantity of an item is determined. There can be a single item, or a group of items, or items that are related to each other. In every possible set of items, the quantity of the possible item groups or their sorting measures can be determined with counting principles.

Question

7.
a) Let the event E be the sum of a pair of dice that is greater than 11. List the events in E°.
b) Julia sets up a passcode on her smart phone, which allows only four-digit codes. A spy sneaks
a look at Julia's smart phone and sees her fingerprints on the screen over four numbers. What is
the probability the spy is able to unlock the smart phone on his first try? Express your answer as
a fraction in lowest terms or a decimal rounded to the nearest millionth.

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