Neco 2017 Computer Studies Question 41

Practice objective / multiple choice question 41 from the 2017 Neco Computer Studies examination.

Neco 2017 Computer Studies Objective / Multiple Choice Medium Difficulty
Question 41 NECO • 2017 • COMPUTER_STUDIES • objective

From a survey of 200 computers, the number of times each computer accessed the internet in a week is grouped as follows: - 0\u20139 times: 30 computers - 10\u201319 times: 50 computers - 20\u201329 times: 70 computers - 30\u201339 times: 40 computers - 40 or more times: 10 computers (assume 45 accesses for this group). Assuming the accesses in each interval are uniformly represented by the midpoint, estimate the mean number of accesses per week. If after a network upgrade the average number of accesses increases by \(12\%\), what is the new estimated mean (to two decimal places)?

Answer Options

A. Original mean ≈ 23.00 accesses per week; new mean ≈ 25.76 accesses per week
B. Original mean ≈ 21.50 accesses per week; new mean ≈ 24.08 accesses per week
Correct Answer C. Original mean ≈ 22.03 accesses per week; new mean ≈ 24.67 accesses per week
D. Original mean ≈ 22.50 accesses per week; new mean ≈ 25.20 accesses per week
Correct Answer
C
Correct Option:
Original mean ≈ 22.03 accesses per week; new mean ≈ 24.67 accesses per week

About This Question

This is Neco 2017 Computer Studies Question 41. It is one of the objective questions from the 2017 Neco Computer Studies examination.

Difficulty level: Medium .

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