A manufacturer of automobiles finds that 15% of the cars are unfit for delivery when they come off the assembly line. A worker proposes a new assembly technique which he claims will reduce the percentage of unfit cars. His technique is tried on 80 randomly chosen cars. It turns out that 3 are defective. Test at α = 0.05. Show all seven steps to receive full cred

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.1: Measures Of Center
Problem 9PPS
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A manufacturer of automobiles finds that 15% of the cars are unfit for delivery when they come off the
assembly line. A worker proposes a new assembly technique which he claims will reduce the percentage of
unfit cars. His technique is tried on 80 randomly chosen cars. It turns out that 3 are defective.
Test at α = 0.05. Show all seven steps to receive full credit.

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