A company manufactures cell phone chargers. In August, a random sample of 200 chargers were inspected, and 3 were found to be defective. The company manufactured 14,600 cell phone chargers in August.   Based on the results from the sample, about how many cell phone chargers are expected to be defective out of all the chargers produced in August?

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
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ISBN:9780547587776
Author:HOLT MCDOUGAL
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Chapter11: Data Analysis And Probability
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A company manufactures cell phone chargers. In August, a random sample of 200 chargers were inspected, and 3 were found to be defective. The company manufactured 14,600 cell phone chargers in August.  

Based on the results from the sample, about how many cell phone chargers are expected to be defective out of all the chargers produced in August?

 

Expert Solution
Step 1

Let X be the number of defectives from the binomial distribution with probability (p) = 3/200 and sample size (n) = 14600

Then, 

We will find the expected detective charger in August or E(X) = ? 

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