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You are considering relaxing your control requirements that determine what is acceptable quality; you have been...

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General Management

You are considering relaxing your control requirements thatdetermine what is acceptable quality; you have been using a 99.0%confidence interval but want to begin using a 97.5% confidenceinterval.

Your team has collected the following data from 4 samples of 7observations each. The calculated standard deviation is 13.981.

Sample 1Sample 2Sample 3Sample 4
Obs 1392.2415.1413.6399.7
Obs 2392.3408.1394.9402.3
Obs 3405.4428.6410.1400.6
Obs 4410.3398.2410.8427.6
Obs 5423.3403.3423.2385.8
Obs 6413.9421.1402.7431.0
Obs 7426.7433.5385.8405.9

What is the UCL for the mean given the new confidence intervalof 97.5%? (Keep one decimal point in your answer)

Answer & Explanation Solved by verified expert
3.7 Ratings (455 Votes)
Following table highlights average values of each sample consisting of 4 samples Average value of each sample Sum of 7 observations 7 Sample 1 Sample 2 Sample 3 Sample 4    See Answer
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