A random variable represents the number of successes in 20 Bernoulli trials, each with probability of success p = 0.55.(A) Find the mean and standard deviation of the random variable.(B) Find the probability that the number of successes lies within 1 standard deviation of the mean.(A) The mean of the random variable is 11. (Type an integer or a decimal.)The standard deviation of the random variable is approximately(Round to three decimal places as needed.)

The number of Bernoulli trials is .The probability of success is .There is a random variable , that…

Answered: Find the mean and standard deviation of…

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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The IQ's in a certain population are normally distributed with a mean score of 104 and a standard deviation of 14. If we select a person at random from this population, find the probability that their IQ will be: 1. Find the 67th percentile of IQ's in this population. 2. Find the 20 The percentile of IQ's in this population 3. Find the IQR of IQ's in this population.
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