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Author Question: The cycle times for an electroplating machine are believed to be normally distributed. Twenty-one ... (Read 39 times)

trevg

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on: Feb 26, 2023
The cycle times for an electroplating machine are believed to be normally distributed. Twenty-one plating operations are randomly sampled, and cycle times are recorded. The sample average cycle time is 10.21 min, with a standard deviation of 0.59 min. What is a 95% confidence interval for the mean cycle time on this machine?

◦

(9.958, 10.462)


◦

(9.941, 10.479)


◦

(8.979, 11.441)


◦

(9.911, 10.509)

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Marked as best answer by trevg on Feb 26, 2023

gcurrens

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Reply #1 on: Feb 26, 2023
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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trevg

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Reply 2 on: Feb 26, 2023
YES! Correct, THANKS for helping me on my review

amandalm

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Reply 3 on: Yesterday
Excellent

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