1. In a sample of 20 bolts, the average breaking torque was 89.7J with a standard deviation of 8.2 J. Assume that the breaking torques are normally distributed. Find a tolerance interval for the breaking torque that includes 95% of the bolts with 99% confidence.
1. In a sample of 20 bolts, the average breaking torque was 89.7J with a standard deviation of 8.2 J. Assume that the breaking torques are normally distributed. Find a tolerance interval for the breaking torque that includes 95% of the bolts with 99% confidence.
Big Ideas Math A Bridge To Success Algebra 1: Student Edition 2015
1st Edition
ISBN:9781680331141
Author:HOUGHTON MIFFLIN HARCOURT
Publisher:HOUGHTON MIFFLIN HARCOURT
Chapter11: Data Analysis And Displays
Section: Chapter Questions
Problem 6CR
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![1. In a sample of 20 bolts, the average breaking
torque was 89.7J with a standard deviation of 8.2 J.
Assume that the breaking torques are normally
distributed.
Find a tolerance interval for the breaking
torque that includes 95% of the bolts with 99%
confidence.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F858aa5e1-ece8-4a67-a0a4-477ec4c5e9a9%2F8f403539-7218-473a-8eb9-f3dd7e1fc321%2Fc4siy2n_processed.jpeg&w=3840&q=75)
Transcribed Image Text:1. In a sample of 20 bolts, the average breaking
torque was 89.7J with a standard deviation of 8.2 J.
Assume that the breaking torques are normally
distributed.
Find a tolerance interval for the breaking
torque that includes 95% of the bolts with 99%
confidence.
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