Answered: What is the standard deviation for the…

What is the standard deviation for the probability experiment where that the first one shows up on 7th roll, when rolling a 12D (12 sided die)? (round to 2 decimals places)

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question

What is the standard deviation for the probability experiment where that the first one shows up on 7^th roll, when rolling a 12D (12 sided die)? (round to 2 decimals places)

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Expert Solution

Step 1

Given that

12 sided dice is rolled

Sample space = (1,2,3,4,5,6,7,8,9,10,11,12)

p = Probability of getting 1 = 1/12

X ~ Geometric (p = 1/12)

X : The probability experiment where that the first one shows up on 7^th roll.

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