Please use excel! The Write Right Company manufactures ballpoint pens and hasbeen experiencing a 5% rate of defective pens. Modifications aremade to the manufacturing process in an attempt to improvequality, and the manager claims that the modified procedure isbetter, because a test of 50 pens shows that only one is defective.a) Assuming that the 5% rate of defects has not changed, find theprobability that among 50 pens, exactly one is defective.b) Assuming that the 5% rate of defects has not changed, find theprobability that among 50 pens, none are defective.c) What probability value should be used for determiningwhether the modified process results in a defect rate that is lessthan 5%?d) What do you conclude about the effectiveness of the modifiedproduction process?

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Answered: The Write Right Company manufactures…

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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According to the Pew Research Center,on the propotion of the American population who use only a cellular telephone (landline) is 0.37. Jason conducts a survey of one hundred fifty 20 to 24 year olds who live on their own and finds that 73 do not have a landline to their home. Does this provide sufficient evidence to conclude that the proportion of 20 to 24 year olds who live on their own and don't have a landline is greater than 0.37? Use a=0.10 level of significance. D) Compute the test statistic z0. Round to the nearest hundredth. E) Draw a normal model with the area that represents the P-value shaded. F) Determine and interpret the P-value. What is the conclusion of the hypothesis test?

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