1. A population has a mean of 75 and a standard deviation of 17.4. A sample of 35i items is randomly selected from this population. What is the probability that them meanof this samples lies between 72 and 79?

1. A population has a mean of 75 and a standard deviation of 17.4. A sample of 35i items is randomly selected from this population. What is the probability that them meanof this samples lies between 72 and 79?

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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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.

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2. An electronic company in Laguna manufactures resistors that have a meanr resistance of 120 ohms and a standard deviation of 13 ohms. Find the probabilityt that a random sample of 40 resistors will have an average resistance greater than14 ohms.

3.Suppose that the average outstanding credit card balance for young professionals isPhp11,200 with standard deviation of Php 2,600. In simple random sample of 150 young professionals, what is the probability that the mean outstanding credit card balance does not exceeds Php12,300?

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