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A certain production process produces items that are 10 per cent defective. Each item is inspected before supplying to customers but the inspector incorrectly classifies an item 10 per cent of the time. Only items classified as good are supplied. If 820 items have been supplied in all, how many of them are expected to be defective ?

A certain production process produces items that are 10 per cent defective. Each item is inspected before supplying to customers but the inspector incorrectly classifies an item 10 per cent of the time. Only items classified as good are supplied. If 820 items have been supplied in all, how many of them are expected to be defective ?

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section11.5: Interpreting Data
Problem 1C
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A certain production process produces items that are 10 per cent defective. Each item is inspected before supplying to customers but the inspector incorrectly classifies an item 10 per cent of the time. Only items classified as good are supplied. If 820 items have been supplied in all, how many of them are expected to be defective ?
Transcribed Image Text:A certain production process produces items that are 10 per cent defective. Each item is inspected before supplying to customers but the inspector incorrectly classifies an item 10 per cent of the time. Only items classified as good are supplied. If 820 items have been supplied in all, how many of them are expected to be defective ?
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