Neco 2020 Data Processing Question 17

Practice objective / multiple choice question 17 from the 2020 Neco Data Processing examination.

Neco 2020 Data Processing Objective / Multiple Choice Medium Difficulty
Question 17 NECO • 2020 • DATA_PROCESSING • objective

In a data entry system each record consists of 5 independent fields. The probability that a single field is entered incorrectly is \(0.02\). A batch contains 200 records. (a) What is the expected number of records that contain at least one error? (b) If a quality‑control step detects and corrects \(80\%\) of the erroneous records, how many records are expected to be released without error after the QC?

Answer Options

A. ≈ 194.5 records (rounded to one decimal place)
B. ≈ 198.0 records (rounded to one decimal place)
C. ≈ 200.0 records (rounded to one decimal place)
Correct Answer D. ≈ 196.2 records (rounded to one decimal place)
Correct Answer
D
Correct Option:
≈ 196.2 records (rounded to one decimal place)

About This Question

This is Neco 2020 Data Processing Question 17. It is one of the objective questions from the 2020 Neco Data Processing examination.

Difficulty level: Medium .

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