A manufacturer of pins knows that 5% of his product is defective. If he sells pins in boxes of 100 and guarantees that not more than 4 pins will be defective. What is the probability that a box will fail to meet the guaranteed quality? A random sample of 1000 iron rods are tested for their length and it is found that the mean and standard deviation are 14.4 and 2.5 meters respectively. If the length is normally distributed then find (i) how many rods between 12 and 16 meters. (ii) what are chances that any rod selected at random will be 15 meters or above?

A manufacturer of pins knows that 5% of his product is defective. If he sells pins in boxes of 100 and guarantees that not more than 4 pins will be defective. What is the probability that a box will fail to meet the guaranteed quality? A random sample of 1000 iron rods are tested for their length and it is found that the mean and standard deviation are 14.4 and 2.5 meters respectively. If the length is normally distributed then find (i) how many rods between 12 and 16 meters. (ii) what are chances that any rod selected at random will be 15 meters or above?

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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