The proportion of defective parts produced by ABC Company was equal to 0.20 when the ownerordered some changes in the assembly process. After the changes were put into effect, a randomsample of 50 parts was tested, revealing a total of 6 defective parts.Do the sample data provide sufficient sample evidence to conclude that the proportion of defectiveparts produced by ABC Company became different from 0.20 after the changes in assemblyprocess?Test the appropriate hypothesis using critical value approach. Use level of significance a = 0.05.a. State null and research hypotheses:Ho:H₁ :b. Find the observed value of test statistic.Keep 2 digits after decimal point in the expression for observed value of test statistics.The observed value of test statistic is Z =obs.c. State the rejection region (in the form of inequality).The rejection region isd. Insert the word sufficient or insufficient into the following statement.There issample evidence that the proportion of defective parts hasbeen changed after the changes in the assembly process were put into effect.-

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Answered: The proportion of defective parts…

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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