buckles were found. Is there sufficient evidence to indicate that the percentage of defective buckles produced has changed following the repair work? Test at 1% level of significance
buckles were found. Is there sufficient evidence to indicate that the percentage of defective buckles produced has changed following the repair work? Test at 1% level of significance
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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Q3
Transcribed Image Text:3. A machine that produces buckles for luxury designer bags, is known to produce 3%
defective buckles. Following a major breakdown of the machine, extensive repair work is
carried out which may result in a change in the percentage of defective buckles produced.
To investigate this possibility, a random sample of 200 buckles is taken and 12 defective
1
UTM UTM
buckles were found. Is there sufficient evidence to indicate that the percentage of defective
KA R R
buckles produced has changed following the repair work? Test at 1% level of significance
level. Assume that the observations are from a normal distribution.
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