Question

a chocolate factory produces 30,000 chocolate bars in a day and randomly selects 1,000 of them for quality testing. in the sample, they find that 25 chocolate bars have defects. based on this data, approximately how many defective chocolate bars would they expect in the entire production batch? a 30 b 40 c 750 d 850

Explanation:

Step1: Calculate the defect rate in the sample

The defect rate in the sample is $\frac{25}{1000}$.

Step2: Apply the defect rate to the entire production batch

Multiply the defect rate by the total number of chocolate bars ($30000$). So the number of defective bars is $\frac{25}{1000}\times30000$.

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Answer:

C. 750