A histogram of waiting times (minutes) at a bank has classes 0-5, 5-10, 10-15, 15-20 with frequencies 12, 18, 6, 4. The bank promises that at most 25% of customers wait 10 minutes or more. Does the data meet this promise?

Question

Accepted Answer

Yes; exactly 25% wait 10 minutes or more, which meets the at most 25% promise. Total = 12+18+6+4 = 40. Waiting 10 min or more: 6+4 = 10. Percentage = 10/40 × 100 = 25%. The promise is 'at most 25%', and 25% ≤ 25%, so the data does meet the promise.

A histogram of waiting times (minutes) at a bank has classes 0-5, 5-10, 10-15, 15-20 with frequencies 12, 18, 6, 4.
The bank promises that at most 25% of customers wait 10 minutes or more. Does the data meet this promise?

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More Class 8 Bar Graphs and Histograms practice

A histogram of waiting times (minutes) at a bank has classes 0-5, 5-10, 10-15, 15-20 with frequencies 12, 18, 6, 4.The bank promises that at most 25% of customers wait 10 minutes or more. Does the data meet this promise?

Step-by-Step Solution

Master this chapter in 30 minutes a day.

More Class 8 Bar Graphs and Histograms practice

A histogram of waiting times (minutes) at a bank has classes 0-5, 5-10, 10-15, 15-20 with frequencies 12, 18, 6, 4.
The bank promises that at most 25% of customers wait 10 minutes or more. Does the data meet this promise?