A supervisor is reviewing a production line that has been experiencing problems with the sequencing of tasks. The problem is that gridlocks are occurring because of the inconsistency of sequential operations. He decides to conduct a test wherein two different techniques are used to finish the same task. He measures the times (in minutes). From the sample data he calculated some relevant information given below: Standard Sample Size Averages Deviation EXA Σ Σ Σ Technique A 13.3 4.99 10 133 1993 Technique B 14.5556 5.5927 131 2157 a) Can the supervisor conclude that technique A is more consistent than technique B? Use 95% confidence. b) Estimate the variability of technique A with 90% confidence. c) (Fill in the blanks this question is independent of a) and b)) A random sample of size n is drawn from a population that is normally distributed whose standard deviation is o . In hypothesis testing for the population mean, the t test should be used instead of the z test if n is greater than and o is
A supervisor is reviewing a production line that has been experiencing problems with the sequencing of tasks. The problem is that gridlocks are occurring because of the inconsistency of sequential operations. He decides to conduct a test wherein two different techniques are used to finish the same task. He measures the times (in minutes). From the sample data he calculated some relevant information given below: Standard Sample Size Averages Deviation EXA Σ Σ Σ Technique A 13.3 4.99 10 133 1993 Technique B 14.5556 5.5927 131 2157 a) Can the supervisor conclude that technique A is more consistent than technique B? Use 95% confidence. b) Estimate the variability of technique A with 90% confidence. c) (Fill in the blanks this question is independent of a) and b)) A random sample of size n is drawn from a population that is normally distributed whose standard deviation is o . In hypothesis testing for the population mean, the t test should be used instead of the z test if n is greater than and o is
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter4: Equations Of Linear Functions
Section: Chapter Questions
Problem 8SGR
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