GMAT Problem Solving
Home > GMAT Test > GMAT Problem Solving Questions
Next steps
- Use your browser's back button to return to your test results.
- Do more GMAT Problem Solving Questions.
Source: PREP
Level: 5
A vending machine is designed to dispense 8 ounces of coffee into a cup. After a test that recorded the number of ounces of coffee in each of 1,000 cups dispensed by the vending machine, the 12 listed amounts, in ounces, were selected from the data. If the 1,000 recorded amounts have a mean of 8.1 ounces and a standard deviation of 0.3 ounce, how many of the 12 listed amounts are within 1.5 standard deviations of the mean?
- A 4
- B 6
- C 9
- D 10
- E 11